I saw this on the "collapse" subreddit or something similar. In general, the area I live in has always had issues with molds and it's getting worse every year. Things go bad super fast. Food from the grocery store and such. If you make anything homemade, with no crazy preservatives, it's growing mold in a few days. I blast UV-C light in my shower every night to keep it from growing mildew in-between cleans. I honestly don't even want to think about what it's doing to my body and lungs.