FUNGI: which includes mildew, mold, mushrooms, are any of the major group of saprophytic and parasitic lower plants that lack chlorophyll that release disease causing toxins. The toxins released by this microbiological contaminant including Sperigmatocystin and Alfatorin B1 from Aspergillus which are carcinogenic. Fungus organisms growing in a water reservoir where antigens can be eluded and sprayed into the air as small droplets can be an agent for hypersensitivity diseases such as Hypersensitivity Pneumonitis. Fungus from agricultural sources in outdoor air are the most common cause of contamination indoors. Indoor sources include plants, carbon-based products, building materials, and wood products. The common locations in buildings for the majority of fungi growths include appliance drain pans, grain and meat food products, paper products, carpeting, ceiling tile, air conditioning duct work, plants, dusts and soil used to pot plants. Microbiological contaminants require a food source and relative humidity level above forty percent (70%) to thrive in most instances
