Molds are microscopic fungi made up of clusters of filaments. Many molds reproduce by releasing spores into the air.
They like damp environments and need four things to grow: food, air, appropriate temperature and water. Molds can be found outdoors, in homes and in other buildings.
Everyone breathes in mold spores, but some people can have an allergic reaction or asthma. The allergy symptoms can be from stuffy nose, post nasal drip, cough and/or asthma exacerbation.