mold behind drywall near plumbing 11

https://wiki-canyon.win/index.php/How_to_Handle_Hidden_Mold_After_a_Plumbing_Leak:_A_Mold_Remediation_St._Louis_Case_Study

We noticed a musty smell in the bathroom last week, and when I finally peeked behind the access panel, there it was: mold creeping along the drywall where the pipe comes through the wall. It's that black, fuzzy kind, right near the plumbing joint, probably from a slow drip that's been going on for months. Gross.