Cladosporium is a common outdoor mold that can grow indoors on surfaces like wood, textiles, and damp, porous materials. It can appear olive green, brown, or black.

What Is Mold? Many times, we call mold "mildew" when we see it growing in shower stalls and bathrooms or where there has been a water leak in the house.

Many different types of mold can affect the lungs. Some people are more susceptible to illness resulting from mold exposure than others. Learn more here.