If mold spores land on a suitable surface, they will begin to grow. It is usually these mold spores that cause allergic reactions. Molds need three things to thrive- moisture, food and a surface to grow on. Molds can be seen throughout the house, and can be found in most bathrooms. Mold growth can often be seen in the form of discoloration, and can be many colors-white, orange, pink, blue, green, black or brown.
Mold spores can cause adverse reactions, much like pollen from plants.
Mold spores cause health problems when they become airborne and are inhaled in large quantities. Everyone is exposed to mold in some concentration in the outdoor air. Indoor exposure to molds is not healthy for anyone. In particular, people with allergies, existing respiratory conditions or suppressed immune systems are especially susceptible to health problems from mold exposure. Additionally, infants and children, pregnant women and the elderly can be sensitive to the effects of mold exposure.