Homes built with toxic drywall are facing many dangers. Air conditioner coils are corroding, copper wiring and outlets are covered with black soot, houses smell like rotten eggs and people are getting sick. The Florida Department of Health says the odor is coming from the emission of volatile sulfur compounds. These gases are causing the copper corrosion. Enough toxic drywall from China was shipped to the US in 2006-07 to build at least 30,000 homes.