If your workout clothes smell fine out of the wash but stink the moment you warm up, you're not imagining it. Sweat and body oils build up in synthetic fabrics and trap odour. Here's how to fix it.
Why Gym Clothes Keep Smelling
- Synthetic fabrics hold onto oils. Polyester and nylon wick sweat well, but body oils cling to the fibres.
- Too much detergent leaves residue that traps bacteria and odour.
- Fabric softener coats fibres, sealing smells in and reducing wicking.
- Sitting damp in a gym bag or hamper lets bacteria multiply.
How to Get the Smell Out
- Soak first. Mix one part white vinegar to four parts cool water and soak the clothes for 30 minutes.
- Wash inside out in cool or warm water (check the label) with a normal amount of detergent, not extra.
- Skip the fabric softener.
- Air dry when you can. High heat can lock in odours and damage stretchy fabrics.
How to Remove Yellow Sweat Stains
Yellow underarm stains come from sweat mixing with antiperspirant.
- Make a paste of baking soda and water (on white fabrics you can add a little 3% hydrogen peroxide, but test it first).
- Scrub gently into the stain with an old toothbrush.
- Let it sit for an hour.
- Wash as usual and air dry to check.
Prevention: let antiperspirant dry fully before getting dressed, and wash sweaty shirts sooner rather than later.
Daily Habits That Help
- Don't leave sweaty clothes in your bag. Hang them to dry if you can't wash them right away.
- Wash gym clothes separately from towels, which shed lint onto synthetic fabric.
- Clean your washer monthly; a musty machine passes smells on.
For Gyms and Fitness Studios
Towels are a gym's biggest laundry challenge. Read Commercial Laundry for Gyms in the GTA or see our gym laundry service.
