Why Carpet Can Smell Moldy Before Visible Growth Appears

https://blast-wiki.win/index.php/Why_Carpet_Can_Smell_Moldy_Before_Visible_Growth_Appears

Carpet can smell moldy long before you see any spores because mold needs moisture to grow, and it often starts deep in the padding or backing where water seeps in from spills, humidity, or leaks. The odor comes from microbial volatile organic compounds released as mold colonizes hidden damp areas. By the time you spot visible growth, the problem has already been festering for days or weeks, so that musty smell is an early warning that moisture is trapped and mold is actively spreading underneat…