Wash towels in hot water with detergent
Add 1 cup white vinegar to the wash cycle
Run a second wash with 1/2 cup baking soda
Use the hottest water safe for the fabric
Avoid using too much detergent
Do not use fabric softener
Dry towels completely after every wash
Dry towels in direct sunlight if possible
Rewash towels that were left damp too long
Clean the washing machine regularly
Leave the washer door open after use
Store towels only when fully dry
Soak towels in vinegar and water before washing if needed
Use oxygen bleach for stubborn odors
Replace towels that still smell after repeated washing