carpet pad mold 3

https://weekly-wiki.win/index.php/How_to_Prevent_Mold_in_Carpet:_Practical_Steps_for_a_Healthier_Home

Finding mold growing on a carpet pad is a gross and frustrating issue. It often happens after a leak or long-term moisture gets trapped under the carpet, creating a damp, dark environment perfect for mold spores. The smell is unmistakable musty, and you might notice allergens flaring up. Removing and replacing the pad is usually necessary, as it's almost impossible to fully clean.