Inhaling mold or mold spores may cause allergic reactions in sensitive individuals, including hay fever-type symptoms such as sneezing, runny nose, red eyes, and skin rash (dermatitis) . The effects of breathing in mold spores depend on several factors, including overall health, age, and sensitivity to mold. Some people may experience no effect from inhaling mold spores, while others may experience dramatic effects. The most common symptoms of mold exposure include coughing, wheezing, sneezing, runny nose, postnasal drip, itchy throat and nose, itchy or watery eyes, and skin irritation. In addition, mold exposure can irritate the eyes, skin, nose, throat, and lungs of both mold-allergic and non-allergic people. Mold exposure can also cause asthma attacks in people with asthma who are allergic to mold. Long-term exposure to high levels of mold in the home may cause respiratory symptoms, and people with weakened immune systems may also have a risk of fungal infection. If you fear that you may have inhaled mold, it is best to contact medical professionals and let them know what’s going on.