Musty odor is strongly linked to lingering moisture
Wet laundry left in the washer or a damp pile for too long can develop a musty smell. Prompt transfer and complete drying are simple but important controls.
If the smell returns across multiple loads
The washer itself may need attention. Follow the model-specific cleaning instructions for the drum, gasket, dispensers and any clean-washer cycle. Using the wrong detergent type or too much product can contribute to residue inside some machines.
Rewash before drying when odor is obvious
If clothes already smell musty when they leave the washer, rewashing is generally more sensible than using dryer heat to mask the problem. Respect the garment care labels when choosing the rewash settings.
Prevent the next occurrence
Remove loads promptly, leave the washer to dry as the manufacturer recommends, dose detergent correctly and avoid overloading.
Musty odor usually means moisture stayed too long somewhere in the process
The source may be damp laundry left in the washer, slow indoor drying, a humid storage area or buildup inside the machine.
Rewash the affected load before storing it
Use a label-compatible cycle and normal measured detergent. Do not put still-musty clothing into a closet and expect the odor to disappear after it dries.
Fix the drying condition as well as the wash
Increase airflow, separate garments and make sure thick seams, waistbands and layered areas dry completely.
Check the washer when multiple clean loads smell musty
Follow the machine manufacturer's cleaning and maintenance guidance, including door seals, dispensers, filters or drain areas that apply to the model.
Prevent recurrence with a simple finish check
Remove laundry promptly, dry completely, leave the washer to air as recommended and avoid storing garments while any section still feels damp.
Garment care labels, appliance manuals and laundry-product directions can be more specific than a general guide. Use them when they set a tighter limit.