Turn the garment inside out
Soak the underarm area in cold water
Apply white vinegar directly to the odor area
Let it sit for 15 to 30 minutes
Sprinkle baking soda on the damp underarm area
Gently rub the fabric together
Wash with enzyme detergent
Use the hottest water safe for the fabric
Add an extra rinse cycle
Air dry the clothing
Repeat the treatment if odor remains
Avoid using fabric softener on odor-prone clothes
Do not machine dry until the smell is gone
Wash sweaty clothes as soon as possible
Use oxygen bleach for washable fabrics if needed