The most common indoor molds are Cladosporium, Penicillium, Aspergillus, Alternaria and Stachybotrys Chartarum. Mold risks and health issues are directly attributed to three sources from mold exposure, Inhalation, Dermal Exposure, and Ingestion. If you suspect you are ill due to exposure to mold in a building, you should probably vacate the home or building, at a minimum until the cause and presence of mold are evaluated and removed and seek the necessary medical attention.