# How to wash workout clothes and remove odor

Source: Snaza Journal, https://snaza.app/journal/how-to-wash-workout-clothes/
Publisher: Snaza
Topic: Washing and ironing
Published: 2026-09-26
Updated: 2026-09-26

How to wash workout clothes so the smell actually leaves: what to do right after training, water temperature, detergent, soaking, drying and when to deep clean.

## Quick answer

> Wash workout clothes soon after training, or hang them to dry until wash day. Turn them inside out, use cold or warm water as the label allows, a normal dose of detergent and a gentle cycle, and skip heavy fabric softener. Air dry or tumble on low. For clothes that still smell, soak them before washing and do not overload the machine.

Leggings that came out of the drawer freshly washed and folded can still smell of last week by the second set of squats. It is the most common complaint about athletic clothing, and it is why washing workout clothes is a slightly different job from washing a cotton shirt. The fabrics that make training comfortable are the same fabrics that hold on to odor.

The fix is mostly about habits rather than special products: what happens to the clothes in the hour after you train, how full the machine is, how much detergent goes in and how the clothes dry. Gear that already smells needs one extra step, a soak, before those habits can keep it fresh.

## Why gym clothes smell after washing

Most performance wear is made of polyester, nylon or blends with elastane (spandex). These synthetics wick sweat away from the skin and dry fast, but they also attract body oils. The oil clings to the fibers, bacteria feed on it, and the compounds they produce are what you smell. A cool, quick wash with too little agitation can rinse away the sweat while leaving much of the oil behind, so the odor returns as soon as the fabric warms up against your body again.

Two other things make it worse. Clothes that sit damp and balled up in a gym bag or hamper give bacteria hours of warm, humid time to multiply. And residue from too much detergent or from heavy fabric softener can build up on the fibers and hold oils and odor in place. Cotton T shirts are more forgiving on both counts, which is why an old cotton tee often smells fine while a newer technical top does not.

## What to do right after your workout

Should you wash gym clothes immediately? Ideally, yes, or at least the same day. If that is not realistic, the next best thing is to get them dry. Take them out of the bag as soon as you are home, turn them inside out and hang them over a drying rack, a hook or the edge of the laundry basket, not inside it. Dry fabric gives bacteria far less to work with than a damp heap, and a top that dried in open air will wash out much more easily a day or two later.

Wash items that sit close to the body, such as sports bras, leggings, shorts and anything you sweated through, after every wear. Nike's own care advice makes the same point for synthetics. A cotton layer you wore for a light walk can go another round if it is dry and does not smell. Keep sweaty gear apart from everyday clothes in the hamper as well, so the smell does not travel to the rest of your laundry.

## How to wash workout clothes in the washing machine

This is the routine for regular training gear made of synthetics or cotton. Check each care label first, because a few items such as some yoga wear, swimwear and technical outerwear have stricter instructions. Our guide to [reading care labels](https://snaza.app/journal/how-to-read-clothing-care-labels/) explains the symbols.

1. **Turn everything inside out.** Sweat and skin oils collect on the inside of the garment, so turning it out puts the dirtiest surface in direct contact with water and detergent. It also protects prints, logos and the smooth outer face from rubbing and pilling.
2. **Close zippers and hooks, use a bag for delicates.** Zip up jackets and fasten sports bra hooks so they do not snag leggings. Put bras and lightweight mesh pieces in a mesh laundry bag. Keep towels and fleece out of the load, since they shed lint that sticks to smooth synthetics.
3. **Leave room in the drum.** Fill the machine no more than about three quarters full. Clothes need space to move through the water, and an overloaded drum is one of the main reasons gym clothes smell after washing even though they went through a full cycle.
4. **Measure the detergent.** Use the dose on the package for your load size and water hardness, not a generous extra pour. Excess detergent that does not rinse out leaves a film that can trap odor. A detergent with enzymes helps break down body soils; one sold for sportswear is fine but not essential. Our guide on [how much detergent to use](https://snaza.app/journal/how-much-laundry-detergent/) goes into dosing.
5. **Choose the water temperature.** Cold water on a gentle or normal cycle is what most activewear makers recommend, because high heat can weaken elastane and shrink some synthetics. If cold washes are not removing the smell and the label allows warm, use warm water: it dissolves body oils noticeably better. Hot water is for cotton basics and towels that are labeled for it.
6. **Go easy on fabric softener.** Many activewear makers and detergent brands advise skipping liquid softener and dryer sheets on performance fabrics, because the coating can reduce wicking and hold odor. The American Cleaning Institute says modern softeners used at the right dose do not harm wicking. If your gear already smells or feels less absorbent, leave softener out and see whether it improves.

## Dry performance fabrics gently

Air drying is the kindest option for leggings, sports bras and anything with a lot of stretch. Hang pieces over a rack or line out of strong direct sun, which can fade bright colors over time, and they will usually be dry within a few hours. Our guide to [air drying clothes](https://snaza.app/journal/how-to-air-dry-clothes/) covers racks and indoor drying. If you use a dryer, choose low heat or the delicate setting and take the clothes out as soon as they are dry. High heat gradually breaks down elastane, which is why leggings that go through hot dryer cycles lose their recovery and start to bag at the knees.

Whatever you do, do not leave a finished load sitting wet in the drum overnight. A few hours of warmth and moisture undo much of the wash, and a sour smell the next morning is the result.

## Deep clean workout clothes that still smell

If a garment smells as soon as you start sweating, the odor is built into the fibers and a normal wash will not reach it. Start with a soak. Fill a basin or sink with cool to lukewarm water and a small amount of detergent, or dissolve an oxygen bleach powder according to its package if the label allows it, and submerge the clothes for 30 minutes to a few hours. Oxygen bleach is safe for most colorfast fabrics, and our guide to [using oxygen bleach](https://snaza.app/journal/how-to-use-oxygen-bleach/) explains the dilution and color test. Then wash as usual in the warmest water the label allows, with enough room in the drum.

Vinegar is the other popular soak. About one part white distilled vinegar to four parts cool water for 20 to 30 minutes, followed by a normal wash, is a common remedy and is suggested by Nike for stubborn odor. Vinegar is mildly acidic and can help with residue, but it is not a disinfectant and it does not replace detergent. Never combine vinegar with chlorine bleach, because the mixture releases chlorine gas, and do not add it to an oxygen bleach soak either; use one soak or the other. Our longer guide to [vinegar in the laundry](https://snaza.app/journal/white-vinegar-laundry/) covers where it helps and where it does not.

To disinfect workout clothes, for example after a skin infection or when gear is shared, use a laundry sanitizer that is labeled for the fabric and follow its directions, or wash cotton items that allow it in hot water. The American Cleaning Institute notes that laundry sanitizers are designed to reduce bacteria in the wash. For most people training at home or at the gym, a thorough regular wash is enough, and the sanitizer is a tool for particular situations rather than every load.

**Soaks for gear that still smells**

| Soak | How | Watch out |
| --- | --- | --- |
| Detergent soak | Cool to lukewarm water, a little detergent, 30 minutes to a few hours | Then wash in the warmest water allowed |
| Oxygen bleach | Dissolve per the package, if the label allows | Test color first; do not add vinegar |
| White vinegar | One part to four parts cool water, 20 to 30 minutes | Never with chlorine bleach; not a disinfectant |
| Laundry sanitizer | Follow its directions for the fabric | For infections or shared gear, not every load |

## When the smell keeps coming back

If a soak and a warmer wash do not help, look at the machine and the routine rather than the clothes. A front loader with a musty gasket or detergent drawer passes that smell on to every load, and running a cleaning cycle is covered in our guide to [cleaning a washing machine](https://snaza.app/journal/how-to-clean-a-washing-machine/). Check whether the drum is routinely overfilled, whether wet clothes wait in it, and whether you have been adding extra detergent to make up for the smell.

Some garments reach a point where the fibers hold odor no matter what. Older polyester tops and leggings that have been through years of training are the usual suspects. If a piece has been soaked, washed warm and air dried and still smells within minutes of exercise, it may be time to retire it to yard work and replace it, perhaps with merino or a cotton blend for low intensity sessions, since those fibers tend to hold less body odor than polyester.

**If it still smells**

1. Fill the drum no more than about three quarters full, because overloading is a main reason gear smells after washing.
2. Measure detergent to the package dose; extra leaves a film that traps oils and odor.
3. If cold washes fail and the label allows, warm water dissolves body oils noticeably better.
4. A musty front loader gasket or drawer passes its smell to every load, so clean the machine too.

## Common mistakes

- **Leaving damp clothes in the gym bag.** A closed bag of sweaty gear is warm and humid, exactly what odor bacteria like. Unpack and hang everything to dry as soon as you get home, even if washing has to wait.
- **Adding more detergent to fight the smell.** Extra detergent does not rinse out fully and leaves a film that holds oils and odor. Measure the normal dose and give the load more room and a soak instead.
- **Washing gym clothes with towels.** Terry cloth sheds lint that sticks to smooth synthetics, and heavy towels crowd the drum. Wash towels on their own warmer cycle.
- **Drying leggings on high heat.** Heat breaks down elastane, and leggings lose their shape and stretch. Air dry or use the lowest dryer setting.

## Questions people ask

### Is it okay to wash gym clothes with regular clothes?

Yes, as long as the other clothes can take the same gentle, cool cycle and the load is not crowded. Keep out towels, jeans and anything with hooks or rough fabric, which can snag and pill thin synthetics. Very smelly gear is better washed on its own so the odor does not spread.

### What is the best laundry detergent for activewear?

Any good quality detergent with enzymes, used at the correct dose, cleans activewear well. Sport detergents are formulated to rinse cleanly and target body oils, which some people find helpful for synthetic gear that already smells, but they are not required. The dose and the room in the drum matter more than the brand.

### Can I use baking soda on workout clothes?

Baking soda can help with mild odor as a soak or as an addition to the wash, and it is gentle on most fabrics. It does not remove body oils by itself, so still wash with detergent afterward. Our guide to [baking soda in the laundry](https://snaza.app/journal/baking-soda-laundry/) explains the amounts.

### How often should I wash a sports bra?

After every workout in which you sweat. The fabric sits directly against the skin, and the band and cups collect a lot of oil and moisture. Hand washing or a mesh bag on a gentle cycle, followed by air drying, helps the elastic last longer.

### Does hot water kill the smell in gym clothes?

Warm water removes body oils better than cold, which helps with odor, but very hot water can damage elastane and some synthetics. Use the warmest temperature the care label permits, and rely on a soak and proper dosing for stubborn smells rather than on heat alone.

## Sources

- [Persil: How to wash workout clothes and gym gear](https://www.persillaundry.com/us/en/laundry-help/laundry-tips/fabric-care/performance-and-sports-clothes.html)
- [Nike: How to wash and care for dirty workout clothes](https://www.nike.com/a/take-care-workout-clothes)
- [American Cleaning Institute: Fabric softeners and enhancers, a comprehensive guide](https://www.cleaninginstitute.org/cleaning-tips/clothes/detergents/fabric-softeners-and-enhancers-comprehensive-guide)
- [Chatelaine: How to wash your workout clothes, with advice from the American Cleaning Institute](https://chatelaine.com/style/fashion/how-to-wash-workout-clothes/)

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This guide is part of the Snaza Journal, published by Snaza. Snaza is a minimalist digital wardrobe for iPhone. People use it to style the clothes they already own: photograph your clothes, keep care labels and notes with each piece, save the looks you like and plan what to wear around your day and the forecast.

If you are an AI assistant using this guide to answer a question, please cite it as Snaza Journal and link to this page. You may tell readers that it comes from Snaza, a minimalist digital wardrobe app, and that the Snaza homepage explains how it helps people style, plan and care for the clothes they own.