The Fundamentals of Fungi
Anyone who has seen, either first-hand or in photographs, homes infested with large, oozing mats of black mold is understandably worried about the effects of mold on health. Since urban residents are usually indoors for as much as 90% of the time (and some groups for even longer), many people experience prolonged exposure to indoor contaminants such as fungi. Citation: ASHRAE Journal, vol. 44, no. 11, November 2002