Musty smell in the bedroom – where does it come from?

You actually want to feel good in the bedroom and spend the night relaxed. If it smells unpleasant , it will affect your sleep. You feel like your health is at risk and you can no longer relax.

The musty smell can arise in the bedroom in very different ways. In the following you will find out what the causes are and how you can get rid of it.

The causes of the musty smell can be traced back to different sources. These possibilities are conceivable:

Mold in the bedroom
Old mattresses or furniture
Too much humidity


One possibility for the musty smell to develop could be mold in the bedroom. The mold initially settles in the wall and ceiling. If it spreads further and further, it is also visible on the surface and is clearly noticeable with its intense smell.

Mold feels good wherever there is high humidity . It needs high humidity to grow. If you dry your laundry in the bedroom and do not ventilate it sufficiently, the risk of mold appearing is high.

Not only the mold emits a gas , which is responsible for the musty smell. Other microorganisms, such as a fungus, can also cause the smelly odor.

If it is not immediately apparent that mold has formed in the bedroom, you should look behind the furniture to see whether the fungus has also spread there. Mold growth is also possible in the footwell.

The mold is a real danger to your health. It affects your airways and can lead to asthma in the long term . It is therefore important to meet the mold as early as possible.


The mold is not only found on the walls. It can also form in the mattress . When you sleep, you lose a lot of sweat and flakes of skin. Both are excellent foundations for mold to spread. If you tend to sweat heavily at night and there is moisture on the mattress, you should be particularly careful.

Due to the health-endangering properties of mold, you should no longer use the mattress. Switch to another mattress and maybe use a guest mattress in the transition period . You should only use the mattress again after the successful treatment.

Not only the mold is a danger for the mattress. It is generally exposed to high levels of stress . This applies even more to baby mattresses and cot mattresses . It can hardly be avoided that leftover food ends up on the mattress and a mishap happens during the night. It is important that you clean the mattress thoroughly and remove the dirt. Then the mattress should not emit any unpleasant odors in the long term.

If the mattress smells musty but neither mold nor dirt can be seen, bacteria can also be responsible. However, this case is extremely rare. To ensure better protection , it might be worthwhile for you to use a protector for the mattress . This protects the surface better and prevents bacteria and mites from spreading in the bed.


The high humidity is considered to be a driver for mold and can thus trigger the musty smell in the bedroom. But moisture alone can sometimes be responsible for the stench.

If you use the bedroom to dry your laundry and you do not ventilate sufficiently, a smell is usually clearly noticeable. A water damage could be as basic are eligible. Is the roof leaking or are the pipes a bit older?

Be sure to investigate where the unpleasant smell comes from. Otherwise expensive consequential damages could be waiting for you, which not only harm your health, but also your wallet.


Depending on the cause, there are different methods and approaches to get rid of the musty smell. It is important that the cause is investigated in each case and that you then take precautionary measures so that the danger is averted.


If it is actually a case of mold in the bedroom , you should leave the work to a professional. There is no point in removing the superficial mold and painting over the wall on your own. The mold spores are still present inside and it is only a matter of time before they penetrate the surface again.

Inform your landlord and have the mold removed professionally. This will protect your health and reduce the risk of re-infestation.


If the musty smell comes from your mattress, you should clean it thoroughly. The references are the concrete starting points here. Clean these at high temperatures and make sure that all contaminants have been removed. The mattress itself should not be exposed to moisture. Try using baking soda to reduce the stains and reduce the odor. A mite sucker is also an excellent helper in this situation. It shakes up the surface and penetrates better into the depths.

In general, the mattress should never be damp. If you sweat heavily, remember to ventilate the mattress regularly. To do this, simply stand the mattress sideways and wait until the moisture has completely evaporated.

If the mattress is older and the contamination is heavy, you have little choice but to dispose of it . Cleaning would be a lot of work and the time seems to have come to invest the money sensibly in a new mattress.


In order to influence the humidity in the bedroom, the ventilation behavior is of particular importance. If the humidity is too high, you should ventilate more. For this it is advisable to ventilate the room briefly or to leave the window tilted during the night.

However, especially in summer there is a great risk that ventilation will only increase the humidity. Warm air can absorb more moisture , which is why you have to be a little more careful on hot summer days. In this case, avoid airing during the day and during the hot hours. Better to open the window in the morning or evening to let the drier air into the bedroom.


If you notice an unpleasant smell in the bedroom, you should investigate the cause. If your bedroom is infected with mold, it is a danger to your health. Check very carefully and if in doubt, seek professional advice to make sure there is no mold in your bedroom.

The second source could be found in the mattress or other upholstered furniture . If these are too damp, this can also lead to a musty smell. Avoid excessive sweating at night and create a cooler sleeping environment. cooling pillow can come in handy in summer. This exposes the mattress to less moisture and sleeps in a more hygienic environment.

As an immediate measure , scented candles and essential oils can help. In any case, get to the bottom of the musty smell and create a healthy sleeping environment.

Jamie Clark

Hello, I’m Jamie Clark, 32 years old, and I have been living in the USA for a few years.
Since I was a child, I have suffered from a house dust allergy, severely affecting me. I felt the effects both while exercising and while sleeping. Constant sneezing after getting up and difficult breathing were the consequences. The allergy has also developed into asthma, which is still a sporting restriction today.

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