musty smell from carpet 2

https://wiki-site.win/index.php/Protecting_Your_Home:_A_Practical_Look_at_EPA_Mold_Remediation_Guidelines

That musty smell from carpet always hits you as soon as you walk in the door. It's a damp, earthy odor that seems to cling to everything, making the whole room feel stale. Probably from a slow leak or high humidity that never quite dried out, now baked into the fibers.