If your clean laundry still smells damp, stale, or moldy, the problem is usually trapped moisture, detergent buildup, or microbial growth in the fabric.
This guide explains how to remove musty smell from clothes and prevent it from returning, using methods that work on everyday fabrics, towels, workout wear, and stored seasonal clothing.
Musty odors can hide in fibers, washing machines, closets, and even detergent residue, so the fix is not always just another wash cycle.
The good news is that a few targeted changes can make clothes smell fresh again without damaging them.
Why clothes develop a musty smell
A musty odor usually develops when moisture sits too long in fabric, allowing mildew, bacteria, or mold spores to grow.
This often happens after clothes are left in the washer, dried too slowly, stored in humid spaces, or folded away before they are completely dry.
Common causes include:
- Leaving wet laundry in the washer or hamper too long
- Drying clothes in low-ventilation areas
- Storing garments in closets, bins, or basements with high humidity
- Using too much detergent, which can trap residue in fibers
- Washing with a dirty machine that holds mildew in the drum, gasket, or dispenser
The smell is often strongest in cotton, towels, athletic clothing, and denim because those fabrics can hold moisture and odor more easily than lightweight synthetics.
How to remove musty smell from clothes with a deep wash
The fastest way to remove musty smell from clothes is to rewash them using additives that break down odor-causing buildup.
Start by checking the care label so you do not use water temperatures or products that could harm the fabric.
Step 1: Shake out and separate the affected items
Remove the clothes from the hamper or storage bin and shake them out to release stale air and loose particles.
Wash musty items separately so the odor does not transfer to otherwise fresh laundry.
Step 2: Use the hottest safe water
Heat helps loosen body oils, detergent residue, and microbial buildup.
Use the warmest water allowed by the garment care label, especially for towels, sheets, cotton T-shirts, and socks.
Delicate fabrics may require cold water, so always check first.
Step 3: Add an odor-fighting booster
Several laundry additives can help neutralize musty odors:
- White vinegar in the rinse cycle can help remove lingering odor and residue.
- Baking soda can support deodorizing during the wash cycle.
- Enzyme laundry detergents work well on organic buildup such as sweat and body oils.
- Oxygen bleach is useful for washable color-safe fabrics when mildew odor is stubborn.
Avoid mixing cleaners that should not be combined.
For example, never mix vinegar with chlorine bleach, and follow product instructions carefully.
Step 4: Do not overload the machine
Clothes need space to move freely so water and detergent can reach all surfaces.
An overloaded washer can leave odor trapped in the center of the load, especially in thick items like hoodies, jeans, and towels.
Step 5: Run an extra rinse
If detergent residue is part of the problem, an extra rinse cycle can help.
Excess detergent can cling to fabric and create a stale smell over time, particularly in high-efficiency machines that use less water.
How to dry clothes so the smell does not return
Even a successful wash will fail if clothes dry too slowly.
Mildew odors often come back when fabric stays damp for too long after washing.
Use immediate, thorough drying
Transfer clothes to the dryer right away or hang them in a space with strong airflow.
Leaving wet items in the washer for even a few hours can restart odor growth.
Check for complete dryness
Thick seams, waistbands, collars, and pockets can stay damp after the rest of the garment feels dry.
Before folding or storing clothing, verify that all layers are fully dry to the touch.
Improve airflow for air-dried items
If you air-dry clothes, hang them with enough space between items and use fans or open windows when possible.
Poor circulation is one of the main reasons air-dried laundry develops a musty smell.
What to do if the musty smell is still there
Persistent odor usually means the buildup is deeper than a standard wash can reach.
At that point, a second treatment or a different cleaning method may be necessary.
Soak the fabric before rewashing
For washable items, a pre-soak in cool or warm water with oxygen bleach or baking soda can help loosen embedded odor.
Soaking gives the cleaner more time to break down residue before the wash cycle begins.
Use a longer wash cycle
Heavy soil and odor often need more contact time with water and detergent.
A longer cycle can help, especially for towels, workout clothes, and heavily stored garments.
Repeat for stubborn fabrics
Items stored in humid spaces for months may need more than one treatment.
If the odor remains after the first wash, repeat the process before drying completely, since heat from the dryer can lock in some odors.
How to treat specific fabrics
Different materials hold odor differently, so the method should match the fabric.
- Cotton: Usually responds well to warm or hot water and oxygen bleach.
- Synthetics: Athletic wear often needs enzyme detergent to remove sweat-based odor.
- Wool: Use gentle detergent, cold water, and air drying only.
- Silk and delicate fabrics: Spot clean or hand wash as directed on the label.
- Denim: Wash inside out and dry thoroughly to prevent trapped moisture in seams.
If the care label says dry clean only, do not force a machine-washing method.
A professional cleaner may be the safest option for valuable or structured garments.
How to clean the washing machine itself
If clothes keep coming out musty, the washer may be the source.
Front-loaders, top-loaders, detergent drawers, rubber gaskets, and drain areas can all hold moisture and mildew residue.
To reduce machine odors:
- Run a hot maintenance cycle with a washer cleaner or approved cleaning solution
- Wipe the door gasket, drum, and detergent tray regularly
- Leave the washer door or lid open after use to let moisture evaporate
- Remove wet clothes promptly after the cycle ends
Keeping the machine dry between loads is one of the most effective ways to prevent recurring musty smells in laundry.
How to stop clothes from getting musty in storage
Prevention matters as much as cleaning.
Clothes stored in humid environments can absorb odors even when they are freshly washed.
Use these storage habits:
- Only store garments that are completely dry
- Keep closets and bins clean, dry, and well ventilated
- Avoid plastic bags for long-term storage unless items are fully protected from moisture
- Use moisture absorbers or a dehumidifier in humid rooms
- Wash seasonal items before putting them away
Natural fibers like cotton and wool are especially vulnerable to absorbing ambient humidity, so dry, breathable storage is essential.
When musty odor means mold
Sometimes a musty smell is more than a laundry issue.
If you see visible spots, discoloration, or a strong basement-like odor that does not improve, the fabric may have mold growth.
In that case, act carefully:
- Wash the item separately from other laundry
- Use the safest cleaning method recommended for the fabric
- Dry it completely in strong airflow or sunlight if appropriate
- Discard items that are badly damaged, heavily contaminated, or impossible to clean safely
For severe mold exposure, especially on upholstery-like clothing items or stored textiles, professional cleaning may be the better option.
Best habits for keeping clothes fresh long term
The easiest way to avoid musty odors is to keep moisture from settling into fabrics in the first place.
A few consistent habits make a large difference.
- Wash sweaty clothes soon after wearing them
- Do not leave wet towels or workout gear in piles
- Use the correct amount of detergent
- Clean the washer regularly
- Dry clothes completely before storing them
- Store seasonal clothing in dry, ventilated spaces
When you combine proper washing, fast drying, and dry storage, the smell usually disappears and stays away.