How long does it take for breathing to start to improve after moving from a mold infested environment?

TimeForATestVacation: That depends entirely on your personal exposure (length of time, intensity, types of molds, your body's response to the mold, etc etc etc). The best way to test is to go away for 2 weeks (and, no, not to a bread factory) and see. If you get better, good news, your symptoms were more irritative but if they persist then there's more of an allergic/immune component that could take weeks to resolve--