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The facts on memory foam smell and mattress off-gassing

Memory foam mattresses usually have the highest ratings for comfort, durability, and customer satisfaction. However, some memory foam mattress owners have complaints about memory foam’s initial “chemical-like” smell, otherwise known as off-gassing. This unpleasant odor is caused by the petrochemicals used to make the mattress and lasts up to 4 weeks.

The good news is, some mattress brands make their foam from better components, like plant-based oils, that reduce or eliminate memory foam smell. This article explains how, and tells you what to look for to make sure your mattress comes odor-free.

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What causes memory foam smell?

New foams and many other manufactured products experience off-gassing. If you’ve ever smelled fresh paint, dry cleaning, or the inside of a new car, that’s off-gassing.

Off-gassing occurs when “volatile organic compounds” (VOCs) break down. As opposed to being stable, these “volatile” (or unstable) compounds break apart, most commonly forming gasses — hence the term off-gassing.

In mattresses, the most common place to find VOCs is in the foam and adhesives. They can include chlorofluorocarbons (CFCs), formaldehyde, benzene, methylene chloride, toluene, trichloroethane, naphthalene, perfluorocarbons.

Is off-gassing from memory foam toxic or dangerous?

The short answer is no. While the odor from mattress off-gassing is unpleasant, it’s not harmful to most people. A small percentage of owners report difficulty breathing, headaches, nausea, eye and throat irritation, and asthma. The symptoms stop when the person is no longer near the mattress though, and go away once it airs out.

Also, despite the fact that some of the chemicals that cause mattress off-gassing odors are classified as carcinogens or potential carcinogens, no studies have shown memory foam is toxic or causes cancer. Still, many people choose to reduce their chemical exposure as a lifestyle choice and want to sleep on a mattress that uses cleaner and healthier components.

How can I avoid memory foam smell and off-gassing?

While a completely chemical-free mattress doesn’t exist, you can limit your exposure to chemicals by finding a bed certified by CertiPUR-US®. CertiPUR-US® independently tests and verifies foams to guarantee they’re made without harmful VOCs, phthalates, CFCs, heavy metals, formaldehyde, and PBDEs.
If your mattress does have a “new mattress” smell after unboxing, you can let it air out for 3 to 7 days in a well-ventilated room or garage before putting any bedding on or using the mattress. Giving your bed time to breathe allows any off-gassing scent to dissipate quickly so you can enjoy an odor-free mattress in only a few days.
Not only does the foam in our Amerisleep mattresses meet the CertiPUR-US® standards, but it’s also eco-friendly and plant-based. To make our Bio-Pur® foam, we incorporate castor oil, resulting in a bouncier and more breathable foam.

Shop Eco-Friendly Amerisleep Mattresses

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See what customers think about our eco-friendly mattresses

Great mattress for couples with different pain areas

We have had this mattress for 3 months and I'm definitely happy. We both find that this bed offers the support we bot...Continue ReadingWe have had this mattress for 3 months and I'm definitely happy. We both find that this bed offers the support we both need without any pressure. I would like to note that the reason I chose this mattress over all others were the eco-friendly materials used. There was absolutely no smell during the mattress expansion.

Don't pass this up

It's like sleeping on a cloud that holds you in the perfect way. I also appreciate the fact that Amerisleep uses eco-...Continue ReadingIt's like sleeping on a cloud that holds you in the perfect way. I also appreciate the fact that Amerisleep uses eco-friendly manufacturing techniques. This was our first big purchase as a couple, and it was worth every penny. It's an investment, and I expect that it will pay off for years to come.

Excellent

We have had the mattress for a couple of months and are very happy. I've experienced back pain in the past, but it ha...Continue ReadingWe have had the mattress for a couple of months and are very happy. I've experienced back pain in the past, but it has been mitigated since using the amerisleep the last couple of months. Mattress does not sleep hot and there was very little off gassing.

The best sleep you'll have!

Most comfortable, eco-friendly mattress! My Husband and I have a great nights sleep ever since it was delivered. High...Continue ReadingMost comfortable, eco-friendly mattress! My Husband and I have a great nights sleep ever since it was delivered. Highly recommended!

Lifelong insomniac approved

I'm a lifelong insomniac and a VERY light sleeper and have spent most of my life surviving on little to no sleep. Wit...Continue ReadingI'm a lifelong insomniac and a VERY light sleeper and have spent most of my life surviving on little to no sleep. With this mattress I have finally experienced a solid full night of sleep. We chose this mattress due to it being number one on every eco-friendly list available.

Doubt we'll need the 100 night trial!!

We did many hours of research and comparisons and finally decided on a king size amerisleep AS3. What a huge differen...Continue ReadingWe did many hours of research and comparisons and finally decided on a king size amerisleep AS3. What a huge difference in the quality and quantity of wonderful, restful sleep with pain free mornings!! It sleeps cool and the support is perfect for us. We are average sized folks, 130lbs and 150lbs, in our 60s and both of us feel as though we are floating and enveloped at the same time. This mattress relieves all the pressure points and supports right where we need it no matter what position we sleep in. We easily set it up early one morning, there was little to no off gassing and we slept on it that night.

Very pleased with my A2 mattress

Primary bed, king size. Husband is predominately a stomach and back sleeper but I prefer to sleep on my side. Both of...Continue ReadingPrimary bed, king size. Husband is predominately a stomach and back sleeper but I prefer to sleep on my side. Both of us prefer a firmer mattress, but not super hard. This mattress fit our needs perfectly. I also liked that there was no odor/gassing. I could use it 8-10 hours after it was out of the box and all fluffed up. It is pretty pricey but I would recommend it.

Amazing mattress!

I did LOADS of online research and my requirements were, in this order - comfortable/helping my back pain, eco-friend...Continue ReadingI did LOADS of online research and my requirements were, in this order - comfortable/helping my back pain, eco-friendly and affordable. After reading 1 zillion reviews, I settled on the Amerisleep mattress. And I have not been disappointed! I have not had ANY back pain since sleeping on this mattress! It is super comfortable, holds it shape beautifully and never produced any kind of weird toxic smells.

Fantastic Mattress - No More Back Pain!

Absolutely recommend! Amerisleep stood out from the competition based on their quality of design and innovative techn...Continue ReadingAbsolutely recommend! Amerisleep stood out from the competition based on their quality of design and innovative technology, but most importantly their commitment to eco-friendly materials and awareness of the products environmental footprint. Combine that with their ease of online shopping and 100 night guarantee returns, Amerisleep is bar none a step above the rest.

It's a good night

I was a bit put off by the price, but so far really worth it. My husband and I have very different preferences and ne...Continue ReadingI was a bit put off by the price, but so far really worth it. My husband and I have very different preferences and needs in a mattress. Pleasing us both is not easy, but our new mattress seems to do just that. I sleep better because when he moves, I don't bounce. I sleep better also because he is more comfortable and there is less tossing and turning. At first I thought the mattress was too firm, but I slept really well night after night. There is no holding body heat as I had feared. The materials of this mattress had no "out gassing". We slept fine the first night after it had a day in the air. Finally I have to say getting the mattress was a real treat. It came in a big box. We opened it up and our new wonderful mattress unfolded. I really like it. I guess I'd say it is perfect and worth the extra cost for a good night's sleep.

Finally a good night's sleep!

I love this mattress… The first one I ordered was too firm but the AS2 is awesome. There is also no off gassing to sp...Continue ReadingI love this mattress… The first one I ordered was too firm but the AS2 is awesome. There is also no off gassing to speak of..another plus. I am on the website now, ordering another one for my son. Do yourself a favor and invest in one of these mattresses!

Amerisleep was the best purchase!

I wanted a firm, yet somewhat soft supportive mattress with no off-gassing. It needed to be made in the USA. The AS3...Continue ReadingI wanted a firm, yet somewhat soft supportive mattress with no off-gassing. It needed to be made in the USA. The AS3 is perfect. It has a 20 year warranty, and I just couldn't be happier. It has really helped my back issues, and I sleep so much better. I don't usually purchase items sight unseen, but I did so much reading about memory foam mattresses online, that buying online and cutting out the middleman was indeed a great savings and smart decision. The mattress that stood out was the Amerisleep. I urge everyone not to hesitate. Purchase an Amerisleep, you'll wonder why you waited so long!

Great mattress for couples with different pain areas

We have had this mattress for 3 months and I'm definitely happy. We both find that this bed offers the support we bot...Continue ReadingWe have had this mattress for 3 months and I'm definitely happy. We both find that this bed offers the support we both need without any pressure. I would like to note that the reason I chose this mattress over all others were the eco-friendly materials used. There was absolutely no smell during the mattress expansion.

Don't pass this up

It's like sleeping on a cloud that holds you in the perfect way. I also appreciate the fact that Amerisleep uses eco-...Continue ReadingIt's like sleeping on a cloud that holds you in the perfect way. I also appreciate the fact that Amerisleep uses eco-friendly manufacturing techniques. This was our first big purchase as a couple, and it was worth every penny. It's an investment, and I expect that it will pay off for years to come.

Excellent

We have had the mattress for a couple of months and are very happy. I've experienced back pain in the past, but it ha...Continue ReadingWe have had the mattress for a couple of months and are very happy. I've experienced back pain in the past, but it has been mitigated since using the amerisleep the last couple of months. Mattress does not sleep hot and there was very little off gassing.

The best sleep you'll have!

Most comfortable, eco-friendly mattress! My Husband and I have a great nights sleep ever since it was delivered. High...Continue ReadingMost comfortable, eco-friendly mattress! My Husband and I have a great nights sleep ever since it was delivered. Highly recommended!

Lifelong insomniac approved

I'm a lifelong insomniac and a VERY light sleeper and have spent most of my life surviving on little to no sleep. Wit...Continue ReadingI'm a lifelong insomniac and a VERY light sleeper and have spent most of my life surviving on little to no sleep. With this mattress I have finally experienced a solid full night of sleep. We chose this mattress due to it being number one on every eco-friendly list available.

Doubt we'll need the 100 night trial!!

We did many hours of research and comparisons and finally decided on a king size amerisleep AS3. What a huge differen...Continue ReadingWe did many hours of research and comparisons and finally decided on a king size amerisleep AS3. What a huge difference in the quality and quantity of wonderful, restful sleep with pain free mornings!! It sleeps cool and the support is perfect for us. We are average sized folks, 130lbs and 150lbs, in our 60s and both of us feel as though we are floating and enveloped at the same time. This mattress relieves all the pressure points and supports right where we need it no matter what position we sleep in. We easily set it up early one morning, there was little to no off gassing and we slept on it that night.

Very pleased with my A2 mattress

Primary bed, king size. Husband is predominately a stomach and back sleeper but I prefer to sleep on my side. Both of...Continue ReadingPrimary bed, king size. Husband is predominately a stomach and back sleeper but I prefer to sleep on my side. Both of us prefer a firmer mattress, but not super hard. This mattress fit our needs perfectly. I also liked that there was no odor/gassing. I could use it 8-10 hours after it was out of the box and all fluffed up. It is pretty pricey but I would recommend it.

Amazing mattress!

I did LOADS of online research and my requirements were, in this order - comfortable/helping my back pain, eco-friend...Continue ReadingI did LOADS of online research and my requirements were, in this order - comfortable/helping my back pain, eco-friendly and affordable. After reading 1 zillion reviews, I settled on the Amerisleep mattress. And I have not been disappointed! I have not had ANY back pain since sleeping on this mattress! It is super comfortable, holds it shape beautifully and never produced any kind of weird toxic smells.

Fantastic Mattress - No More Back Pain!

Absolutely recommend! Amerisleep stood out from the competition based on their quality of design and innovative techn...Continue ReadingAbsolutely recommend! Amerisleep stood out from the competition based on their quality of design and innovative technology, but most importantly their commitment to eco-friendly materials and awareness of the products environmental footprint. Combine that with their ease of online shopping and 100 night guarantee returns, Amerisleep is bar none a step above the rest.

It's a good night

I was a bit put off by the price, but so far really worth it. My husband and I have very different preferences and ne...Continue ReadingI was a bit put off by the price, but so far really worth it. My husband and I have very different preferences and needs in a mattress. Pleasing us both is not easy, but our new mattress seems to do just that. I sleep better because when he moves, I don't bounce. I sleep better also because he is more comfortable and there is less tossing and turning. At first I thought the mattress was too firm, but I slept really well night after night. There is no holding body heat as I had feared. The materials of this mattress had no "out gassing". We slept fine the first night after it had a day in the air. Finally I have to say getting the mattress was a real treat. It came in a big box. We opened it up and our new wonderful mattress unfolded. I really like it. I guess I'd say it is perfect and worth the extra cost for a good night's sleep.

Finally a good night's sleep!

I love this mattress… The first one I ordered was too firm but the AS2 is awesome. There is also no off gassing to sp...Continue ReadingI love this mattress… The first one I ordered was too firm but the AS2 is awesome. There is also no off gassing to speak of..another plus. I am on the website now, ordering another one for my son. Do yourself a favor and invest in one of these mattresses!

Amerisleep was the best purchase!

I wanted a firm, yet somewhat soft supportive mattress with no off-gassing. It needed to be made in the USA. The AS3...Continue ReadingI wanted a firm, yet somewhat soft supportive mattress with no off-gassing. It needed to be made in the USA. The AS3 is perfect. It has a 20 year warranty, and I just couldn't be happier. It has really helped my back issues, and I sleep so much better. I don't usually purchase items sight unseen, but I did so much reading about memory foam mattresses online, that buying online and cutting out the middleman was indeed a great savings and smart decision. The mattress that stood out was the Amerisleep. I urge everyone not to hesitate. Purchase an Amerisleep, you'll wonder why you waited so long!

Great mattress for couples with different pain areas

We have had this mattress for 3 months and I'm definitely happy. We both find that this bed offers the support we bot...Continue ReadingWe have had this mattress for 3 months and I'm definitely happy. We both find that this bed offers the support we both need without any pressure. I would like to note that the reason I chose this mattress over all others were the eco-friendly materials used. There was absolutely no smell during the mattress expansion.

Don't pass this up

It's like sleeping on a cloud that holds you in the perfect way. I also appreciate the fact that Amerisleep uses eco-...Continue ReadingIt's like sleeping on a cloud that holds you in the perfect way. I also appreciate the fact that Amerisleep uses eco-friendly manufacturing techniques. This was our first big purchase as a couple, and it was worth every penny. It's an investment, and I expect that it will pay off for years to come.

Excellent

We have had the mattress for a couple of months and are very happy. I've experienced back pain in the past, but it ha...Continue ReadingWe have had the mattress for a couple of months and are very happy. I've experienced back pain in the past, but it has been mitigated since using the amerisleep the last couple of months. Mattress does not sleep hot and there was very little off gassing.

The best sleep you'll have!

Most comfortable, eco-friendly mattress! My Husband and I have a great nights sleep ever since it was delivered. High...Continue ReadingMost comfortable, eco-friendly mattress! My Husband and I have a great nights sleep ever since it was delivered. Highly recommended!

Lifelong insomniac approved

I'm a lifelong insomniac and a VERY light sleeper and have spent most of my life surviving on little to no sleep. Wit...Continue ReadingI'm a lifelong insomniac and a VERY light sleeper and have spent most of my life surviving on little to no sleep. With this mattress I have finally experienced a solid full night of sleep. We chose this mattress due to it being number one on every eco-friendly list available.

Doubt we'll need the 100 night trial!!

We did many hours of research and comparisons and finally decided on a king size amerisleep AS3. What a huge differen...Continue ReadingWe did many hours of research and comparisons and finally decided on a king size amerisleep AS3. What a huge difference in the quality and quantity of wonderful, restful sleep with pain free mornings!! It sleeps cool and the support is perfect for us. We are average sized folks, 130lbs and 150lbs, in our 60s and both of us feel as though we are floating and enveloped at the same time. This mattress relieves all the pressure points and supports right where we need it no matter what position we sleep in. We easily set it up early one morning, there was little to no off gassing and we slept on it that night.

Very pleased with my A2 mattress

Primary bed, king size. Husband is predominately a stomach and back sleeper but I prefer to sleep on my side. Both of...Continue ReadingPrimary bed, king size. Husband is predominately a stomach and back sleeper but I prefer to sleep on my side. Both of us prefer a firmer mattress, but not super hard. This mattress fit our needs perfectly. I also liked that there was no odor/gassing. I could use it 8-10 hours after it was out of the box and all fluffed up. It is pretty pricey but I would recommend it.

Amazing mattress!

I did LOADS of online research and my requirements were, in this order - comfortable/helping my back pain, eco-friend...Continue ReadingI did LOADS of online research and my requirements were, in this order - comfortable/helping my back pain, eco-friendly and affordable. After reading 1 zillion reviews, I settled on the Amerisleep mattress. And I have not been disappointed! I have not had ANY back pain since sleeping on this mattress! It is super comfortable, holds it shape beautifully and never produced any kind of weird toxic smells.

Fantastic Mattress - No More Back Pain!

Absolutely recommend! Amerisleep stood out from the competition based on their quality of design and innovative techn...Continue ReadingAbsolutely recommend! Amerisleep stood out from the competition based on their quality of design and innovative technology, but most importantly their commitment to eco-friendly materials and awareness of the products environmental footprint. Combine that with their ease of online shopping and 100 night guarantee returns, Amerisleep is bar none a step above the rest.

It's a good night

I was a bit put off by the price, but so far really worth it. My husband and I have very different preferences and ne...Continue ReadingI was a bit put off by the price, but so far really worth it. My husband and I have very different preferences and needs in a mattress. Pleasing us both is not easy, but our new mattress seems to do just that. I sleep better because when he moves, I don't bounce. I sleep better also because he is more comfortable and there is less tossing and turning. At first I thought the mattress was too firm, but I slept really well night after night. There is no holding body heat as I had feared. The materials of this mattress had no "out gassing". We slept fine the first night after it had a day in the air. Finally I have to say getting the mattress was a real treat. It came in a big box. We opened it up and our new wonderful mattress unfolded. I really like it. I guess I'd say it is perfect and worth the extra cost for a good night's sleep.

Finally a good night's sleep!

I love this mattress… The first one I ordered was too firm but the AS2 is awesome. There is also no off gassing to sp...Continue ReadingI love this mattress… The first one I ordered was too firm but the AS2 is awesome. There is also no off gassing to speak of..another plus. I am on the website now, ordering another one for my son. Do yourself a favor and invest in one of these mattresses!

Amerisleep was the best purchase!

I wanted a firm, yet somewhat soft supportive mattress with no off-gassing. It needed to be made in the USA. The AS3...Continue ReadingI wanted a firm, yet somewhat soft supportive mattress with no off-gassing. It needed to be made in the USA. The AS3 is perfect. It has a 20 year warranty, and I just couldn't be happier. It has really helped my back issues, and I sleep so much better. I don't usually purchase items sight unseen, but I did so much reading about memory foam mattresses online, that buying online and cutting out the middleman was indeed a great savings and smart decision. The mattress that stood out was the Amerisleep. I urge everyone not to hesitate. Purchase an Amerisleep, you'll wonder why you waited so long!

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Risk-free, 100-night trial

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Memory foam smell complaints and how other brands compare

<5%

of Amerisleep users have odor complaints

18-20%

of leading national brands have odor complaints

Each memory foam mattress brand uses different materials and methods to create their products. That means some have significantly more problems with mattress off-gassing than others.

Research has also connected higher density foams with increased rates of odor complaints. Therefore brands using foam with a density over 6.0lbs will likely smell worse.

However, most mattress brands prefer to limit the information they share about what goes into their products. They claim it is to protect their trade secrets. That also makes it hard for consumers to feel confident they are choosing a relatively chemical-free mattress though.

Looking for certifications from independent organizations like Certi-PUR® can help. Since they independently test mattress foam for VOCs and other chemicals, they give prospective buyers the information they need to make the best choice.

Amerisleep’s memory foam meets CertiPUR-US® standards for content, emissions, and durability, and is analyzed by independent, accredited testing laboratories.

Mattress off-gassing vs. other mattress odors

Mattress off-gassing refers specifically to odors from the breakdown of VOCs. A new mattress can also have other smells unrelated to memory foam off-gassing though. Even products like plant oils and natural fabrics can produce some scents.

If you buy a mattress low in VOCs (like from Amerisleep) and it still has a slight scent, don’t worry. It’s probably not memory foam off-gassing, and will often quickly go away.

Shop Eco-Friendly Amerisleep Mattresses

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Frequently asked questions

 
How long does off-gassing usually last?

Off-gassing usually only lasts a couple of days, but some mattresses can off-gas for several weeks. If you notice your bed has an off-gassing scent upon unboxing, place your mattress, without any bedding, in a well-ventilated room so it airs out quicker. Mattresses with a CertiPUR-US® certification contain few very VOCs, so those beds don’t off-gas for very long, if at all, after unboxing.

 
Do air purifiers get rid of VOCs?

Air purifiers are good at removing things like dirt, dust, and allergens from the air, so naturally, they make the air in your living space feel fresher and cleaner. However, most air purifiers can’t eliminate VOCs from the air—only PECO air purifiers and air purifiers with carbon filters can reduce VOC levels. If your mattress has a strong off-gassing scent, we recommend cracking a window or running a fan so the smell dissipates.

 
Should I wait until my mattress is done off-gassing to sleep on it?

If your mattress’s off-gassing scent is strong enough to disrupt sleep or cause headaches, you might want to avoid sleeping on it until the smell fades. On the other hand, if the off-gassing is faint and not bothersome, then you should be fine to sleep on your new bed the very first night.

Of course, if you order a bed in a box mattress, you’ll want to give your bed some time to expand. Full expansion will take up to 24 hours, but you can sleep on your bed as soon as a couple of hours after unboxing.

 
Is off-gassing the same as outgassing?

Yes! Both off-gassing and outgassing refer to the release of VOCs from a product or materials. These terms differ in how they’re used: off-gassing is used to describe indoor air quality and household goods while outgassing is used more often in lab settings. When referring to the chemical-like scent in mattresses, the majority of brands will use the term “off-gassing.”

 
What is the healthiest mattress?

Mattresses with eco-friendly, organic, or natural materials are considered to be the healthiest because they contain the fewest chemicals and synthetic materials. Materials like natural latex and plant-based memory foam are cleaner and safer than their counterparts, and hybrids with upcycled steel are easier on the environment than other coil systems.

When shopping for a non-toxic mattress, look for third-party certifications like CertiPUR-US®, OEKO TEX, Global Organic Textile Standard (GOTS), Rainforest Alliance, GREENGUARD, eco-INSTITUT, and more.

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