One of the first signs of hidden mold is a strong, musty smell that doesn’t go away. Even if you cannot see visible growth, mold releases microbial volatile organic compounds (MVOCs) that create a damp, earthy odor. If certain rooms consistently smell musty—especially basements, bathrooms, or attics—there may be hidden moisture and mold growth behind surfaces. Ignoring this smell c... https://onthespotcleaners.wordpress.com/2026/02/18/warning-signs-of-hidden-mold-every-homeowner-should-never-ignore/