How to remove musty smell from clothes, even after being stored a long time

A musty smell is one of those things you don’t notice at the time: the piece goes into a drawer or a duffel bag still damp, or sits forgotten at the bottom of the closet, and when you open it again there’s that basement odor that’s uncomfortable from a few feet away. And it’s rarely just “a smell” — it’s the sign that a fungus is living in the fiber.

This guide is for everyday clothing — T-shirts, trousers, towels, knitwear, bedding and regular-fabric coats. The method covers airing the piece out, washing with vinegar and baking soda, drying hard in the sun, and storing with silica gel. What changes is the fabric and how strong the odor is, and above all what you must not do — the part that makes the smell stick for good.

Golden rule: never dry a musty-smelling garment in an enclosed, unventilated spot, and never store it while still damp. Mold is a fungus that needs moisture and still air — drying or storing it that way multiplies the smell and spreads it to the clothes next to it.

Before you start

Work in a well-ventilated spot, ideally outdoors. A musty odor is easier to treat than it is to judge precisely: bring the piece to your nose and gauge how strong it is — a light smell that fades once you air it out is a good sign; a strong one that “fills the room” calls for a full wash.

• White vinegar (distilled)
• Baking soda
• Mild soap or laundry detergent
• Silica gel packs (or an open jar of baking soda)
• Soft toothbrush or sponge
• Warm water

Assess how strong it is and check the fabric

Check the care label before anything else. Cotton, denim, knitwear and common synthetics tolerate a vinegar soak and sun-drying. Silk, wool, acetate and structured or quilted pieces need more care and, for a strong odor, a specialty cleaner.

Smell the piece and ask yourself: can I just air it, or do I need to wash it? If the smell faded after a night on the line, airing is enough. If it comes back as soon as the piece warms up or you touch it, the fungus is in the fiber and you need to treat it with vinegar and dry it properly.

Air it outside and shake it out

Hang the piece on a line or a hanger in a breezy spot and leave it for a few hours or overnight. Airflow and gentle light help dissipate surface mold and much of the odor. This isn’t the harsh sun yet — this step is for when the smell is light.

Shake the piece firmly before and after airing, ideally outside, to release the spores sitting on the surface. If the smell is gone after this, jump straight to Step 6 and the silica storage; if it’s still there, move on to the vinegar wash.

Soak with white vinegar before washing

Vinegar is a mild acid that kills the fungus and neutralizes the odor without harming most fabrics. Mix 1 cup of white vinegar to every liter of warm water in a basin or straight in the machine, and soak the piece for 30 minutes to an hour. For a very strong smell, leave it overnight, turning the piece halfway through.

To target an area like the collar or an underarm, dab undiluted vinegar on with a sponge and rub gently before the soak. The acidic smell of the vinegar disappears as the piece dries — don’t worry, it doesn’t cling to the garment.

Wash with baking soda and soap

After the soak, wash the piece as usual with mild soap or laundry detergent, but add half a cup of baking soda to the drum along with the soap. Baking soda neutralizes the odor acids and helps lift what’s left in the fiber.

On areas with a very strong smell, make a paste of baking soda and a little water, rub it in gently with the soft brush and let it sit 15 minutes before rinsing. On delicate fabric, use your fingers and skip the rubbing.

Rinse well and use vinegar in place of softener

Rinse thoroughly until all residue is gone. A simple trick: instead of fabric softener, pour half a cup of white vinegar into the machine’s dispenser. It deodorizes for good and softens the fabric like a natural softener, without laying a synthetic perfume on top.

Never mix vinegar with bleach — the reaction releases toxic gas. When in doubt, use plain water for the final rinse.

Dry in the sun, never in a closed closet

Dry the piece in the sun on an open line. Heat, ultraviolet light and moving air work together to kill the fungus and wipe out the smell for good. Leave it for at least a few hours or until the piece is bone dry — and a bit longer, because any residual moisture is exactly what the mold uses to come back.

Towels and bedding need real sun and, if you can, turning inside out so the whole piece gets light. Drying in a covered, still area works but is slower and less effective against a strong odor.

Store with silica gel (or baking soda)

Once it’s completely dry, store the piece with one or two silica gel packs in the basket, drawer or closet. The silica absorbs the moisture mold needs to return. If you don’t have silica, an open jar of baking soda does a similar job at the bottom of the wardrobe.

Let the closet breathe: don’t overstuff it, leave space between pieces and, if the room is damp, keep the door slightly ajar or run a dehumidifier. Preventing the smell is far easier than removing it.

What NOT to do

• Don’t just mask it with perfume, fabric softener or a room spray. They only cover the smell for a few days, and once the effect wears off the odor comes back — often stronger.
• Don’t dry or store it in a closed, damp place. You’re not treating it; you’re incubating more fungus and passing the smell to the clothes next to it.
• Don’t mix vinegar with bleach. The reaction releases chlorine gas and can be a health hazard; bleach also damages colors and delicate fabrics.
• Don’t use bleach to try to “kill” the smell on colored clothing. It strips the color and doesn’t reach the depths of the fiber where the fungus lives.
• Don’t throw the piece in the dryer on high heat before washing it. Strong heat sets the odor and the moisture, and the smell starts to feel like part of the garment.
• Don’t wash musty clothing with your clean laundry. The smell spreads by contact and through the air in the machine, and now you have two pieces to treat.
• Don’t give up after a single attempt. A deep musty smell usually takes two or three cycles; between them, let the piece dry in the sun, not store it.

When the piece is beyond saving

Some cases are about replacing the item, not pushing on:

• Silk, wool, suede, leather or quilted pieces (coat, duvet, pillow): the mold gets deep into the filling and almost never comes out at home. Take it to a specialty cleaner or replace it.
• A very strong, old smell that won’t respond to two or three cycles of vinegar and sun: at that point each attempt just spends product and time for little result.
• Dark (green or black) stains on the fabric: once the mold has left a mark, the color almost never comes back fully.
• If the smell always returns even after treatment: the source is the closet or the room, not the garment. Treating only the piece is bailing water out of a leaky boat — fix the moisture of the space first.