Why do clothes smell?

Taking clothes out of the washing machine may seem like a small task but leaving them inside for several hours or overnight can cause a musty unpleasant smell.

Sometimes the odor can remain even after the clothes have dried. The problem is not simply that the clothes stay wet for too long.

Moisture bacteria fabric fibers and buildup inside the washing machine can all play a role.

Why do wet clothes start to smell?

Damp clothes can create a good environment for bacteria to grow especially at room temperature. Sweat dead skin cells and natural oils left on clothes can also provide food for some bacteria.

A 2021 study from Japan found that the unpleasant smell from wet laundry can be linked to chemical compounds released by certain bacteria.

Some of these bacteria may also survive drying and exposure to ultraviolet light which could explain why the smell sometimes remains after washing.

Your washing machine may also be the Problem

The washing machine itself can contribute to bad odors. In front loading machines dirt moisture and bacteria can build up around the rubber door seal and inside the detergent drawer.

If these areas are not cleaned regularly the buildup may come into contact with freshly washed clothes and contribute to an unpleasant smell.

Fabric type can make a difference

Leaving clothes damp for a long time can also encourage mold and other microorganisms to grow. Some of them can produce compounds that create an earthy or musty smell.

The type of fabric matters too.

Cotton can hold a lot of water while synthetic fabrics such as polyester and nylon can hold onto sweat and body oils for longer.  This is one reason sportswear and polyester clothes may continue to smell even after repeated washing.

How to get rid of the smell

If your clothes develop a bad smell washing them again is usually a good option.  If the care label allows it using warmer water may help remove odor causing microorganisms.

Some people also use diluted white vinegar before washing. However vinegar should never be mixed with bleach or other chemical cleaners, as this can create dangerous fumes.

Keep your washing machine clean

Cleaning the washing machine regularly is just as important as washing the clothes. Pay special attention to the rubber seal detergent drawer and other areas where moisture and dirt can collect.

Running the machine’s recommended cleaning cycle from time to time can also help reduce buildup inside the drum and other parts.

Take clothes out quickly

Cold water washing can save energy and may be gentler on some fabrics. However warmer water can sometimes be more effective at reducing certain odor causing microorganisms. Always follow the care instructions on the clothing label.

The easiest way to prevent musty smelling clothes is simple take laundry out soon after the washing cycle ends dry it properly and keep the washing machine clean. Paying attention to the fabric type and using the right washing method can also help keep clothes fresh.