A musty odor in your home is often a sign of mold growth. If you notice this smell, it is important to investigate further to identify any visible mold or other signs of mold presence, such as water stains or discoloration. Contacting a professional mold remediation service is the best course of action. They can conduct a thorough inspection to determine the extent of the mold problem and provide an effective solution to eliminate the mold and prevent future growth.