201807.30 0 How damaging and dangerous is mold? in Water Damage Health-wise, mold has been known to be carcinogenic, and can cause flu-like symptoms such as diarrhea and infections, possible lung infections and sinusitis. Mold and mildew can cause many problems, both to your family’s health and to your home. It can destroy furniture, wood and drywall. It can offer a place where unwanted bacteria, mites, roaches and rodents can live.