Remove musty odors from the basement by improving ventilation, using dehumidifiers, and cleaning with odor-neutralizing solutions. Address any sources of moisture and consider using activated charcoal or baking soda to absorb persistent smells.

Improve ventilation, use dehumidifiers, and clean with odor-neutralizing solutions. Address moisture sources and use activated charcoal or baking soda for persistent odors. These steps effectively eliminate musty smells and improve air quality.