Open windows and doors to increase airflow
Run fans to circulate fresh air
Use dehumidifiers to reduce moisture
Find and fix any water leaks
Check for mold or mildew in damp areas
Clean and dry carpets, rugs, and upholstery
Wash curtains, bedding, and other fabrics
Remove or replace water-damaged materials
Clean walls, floors, and baseboards with appropriate cleaners
Empty and clean closets, cabinets, and storage spaces
Place baking soda or activated charcoal in affected areas
Replace HVAC filters
Clean air vents and ducts if needed
Keep indoor humidity low
Remove clutter that traps moisture
Dry out basements, attics, and crawl spaces
Use moisture absorbers in closed spaces
Discard items that cannot be cleaned and still smell musty