My Mattress Smells Like Sweat – What Causes It & How To Fix It

It’s the middle of hot weather and you have heavy sweating all night long. Consequently, your bedding and mattress will start to smell a little funky. This is a common problem that many people face, but it can be easily fixed. This article will discuss how to get sweat smell out of mattress and provide some tips on keep it smelling fresh.

Why does my mattress smell like sweat?

There are many conditions that can cause sweating at night: hot and humid weather, poor airflow in the room, medical conditions, inappropriate bedding (heavyweight, thick and unbreathable fabrics) or having nightmares make people to sweat more. As a result, body secretions will accumulate on the bedsheets, pillows and duvet and so on the mattress.

fresh and clean mattress in the bedroom

While you can easily change and wash your sheets and covers, you need to pay more attention to your mattress since its soft fabric tends to retain moisture and odors. A smelly mattress is not only uncomfortable but also unhygienic; it can make your bedroom smell musty and has a negative effect on sleep quality.

Regardless, you want to ensure that your mattress is clean and fresh smelling for your comfort and well-being. Deodorizing your mattress improves the overall air quality in your bedroom as well as minimizes the chance of allergic symptoms.

Best methods to get sweat smell out of mattress

Sweat smells in mattresses can be a nuisance, but they can easily be fixed. Follow these tips on how to get sweat smell out of mattress, and it will smell fresh for years to come!

Ventilate your bedroom

If you often experience a bad morning smell in the bedroom, it might be that your mattress is responsible for it. To eliminate odors, open your windows and allow fresher air in and stale air out. This simple trick helps to stop your mattress from smelling and freshen up your bedroom.

If your bedroom doesn’t have windows, use fans to create a breeze to push bad air out. If you can afford it, invest in a stylish ceiling fan because it rotates the air between the top and bottom of the room, but any fan, even the simplest table or standing fan that improves air circulation aids in ventilation.

Wash your bedding and the mattress cover

When you experience a funky odor in your bedroom, in most cases not your mattress only your bedding is what has a sweaty smell. No matter you changed them last evening, sheets and covers can absorb so much sweat and oil from your skin that makes them unpleasantly stinky.

bed with blanket and pillows

If you are a heavy sweater, frequently washing your bedding is the key including the mattress cover in order to maintain a pleasant smell in the bedroom. If regular washing doesn’t restore your bedding’s clean, fresh state, you might need to treat them with baking soda and vinegar too to get the sweat smell out of them.

Air your mattress

The UV radiation in sunlight works as a natural disinfectant so airing your smelly mattress outside is an excellent way of freshening it up. This method will help remove body odor from your mattress, stops its dampness as well as kills fungus bacteria that might have settled inside its stuffing minimizing the risk of molding.


Place the mattress outside with direct heat from the sun for a few hours. Be sure to turn it over after a few hours. This will not leave your mattress damaged at all but fresh smelling!

Vacuum the mattress

In case these simple tricks don’t help to eliminate odors, your mattress needs deeper cleaning. Start with vacuuming it; it is one of the most effective methods to deodorize and freshen up any mattress.

Queen Size Memory Foam Innerspring Hybrid Mattress

Inofia Queen Size Memory Foam Innerspring Hybrid Mattress

  • responsive memory foam and durable pocket springs mattress which is able to offer sleepers a good night’s sleep by offering enough support and releasing pressure points
  • designed with advanced ergonomics technology, it fits your body perfectly from head to toe
  • the top cover is skin-friendly and soft to the touch, helps to regulate body temperature, the side net cloth around the comfort foam helps to dissipate heat, and the pocket springs underneath enhance airflow

When you vacuum, you are trapping dirt particles that tend to accumulate between the mattress fibers and may cause odors over time. You will notice that if you include vacuuming your mattress in your weekly/monthly bedroom cleaning routine, it will help not only to get smells out of it but also makes it last longer! Don’t forget, a quality mattress represents a good investment, and caring for it is essential so it can serve you for a very long time.

Spray it with vinegar

Vinegar is a cheap and non-toxic household odor eliminator that can be used on almost all surfaces and fabrics in your house that need a little refreshment; using vinegar, you can deodorize your carpets naturally, refresh curtains and soft furnishing and also make your mattress smell good.

To remove the sweat smell from your mattress, mix water and white vinegar in a spray bottle, spritz it on the affected areas, and let it dry. Should you be worried about the distinct smell of vinegar, it will quickly vanish after the fabric dries and you will get a clean, fresh smell. What’s more, this method also helps remove light stains!

Sprinkle baking soda on it

Another natural way to remove sweat smells from your mattresses is using baking soda. It is a natural deodorizer that absorbs odors.

Baking soda with a spoon

If your mattress smells like sweat, just simply sprinkle some baking soda on it, let it sit for a few hours than vacuum it up. And the best is, that baking soda also helps get rid of excess moisture, so it prevents musty smells caused by high humidity too.

Get an odor eliminator spray

If you don’t like the above-mentioned DIY solutions for any reason, there are many commercial odor eliminator sprays that you can purchase to use on your mattress. There might be very few specific mattress odor eliminator sprays, but any upholstery and fabric cleaning spray can do the job.

Consider products that not only cover but destroy the odor molecules and are made without harsh chemicals to promote a healthier living environment for your family and pets.

Use a mattress encasement

If you want to keep your mattress fresh smelling and prevent it from stinking, use a mattress encasement. Such covers are made of waterproof materials to ensure protection against everyday liquids, stains and also from dirt, dust, sweat.

Mattress Protector/Encasement

SafeRest Zippered Mattress Protector/Encasement

  • waterproof yet soft and breathable terry cotton material to wick up even the biggest accidents or stains without any leakage
  • comes with a well-designed zipper to make sure your bed is covered from every angle for protection from unwanted creepy crawlies
  • easy to clean; it is machine washable and can be tumble dry

Using a mattress encasement keeps your mattress clean and hygienic. Moreover, it provides a soothing feeling and helps stay cool when it’s hot – no more sweaty summer nights!

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