To get rid of a basement mildew smell, address the underlying moisture issue first. Use an air purifier and dehumidifier to remove excess moisture and odors. Clean affected surfaces with a mixture of water and vinegar or a commercial mildew cleaner, and improve ventilation.

Address moisture issues, use an air purifier and dehumidifier, and clean surfaces with water and vinegar or a commercial cleaner. Improving ventilation helps eliminate mildew smells effectively. These steps ensure a fresher, odor-free basement environment.