mold behind drywall near plumbing 86

https://thegatewaywatermoldpress.valiantfield.com/posts/hidden-mold-behind-drywall-what-a-plumbing-leak-can-teach-us-about-water-damage

The musty smell was faint at first, but now it lingers near that wall. A small patch of black mold has taken hold behind the drywall, right where the old pipe leaks. It's a quiet, persistent problem that's slowly spreading.