3 Types of Mold Contamination 3 Different Types of Mold Contamination Mold is everywhere we go, whether you are inside your home or outside, mold spores are always in the air. Mold is the most common fungi on earth and cannot be avoided. The mold spores in the air do an important job by helping to recycle dead organic matter and so new life is able to grow. In most cases, mold spores are not harmful at all to us, although in some cases when the conditions permit mold can be incredibly dangerous. Mold will only grow in the right conditions, a good way to prevent mold or spot it before it gets worse is to understand the kind of environment mold likes to grow in. The most important requirements for a mold friendly environment are moisture, a comfortable temperature range (this is the same temperature that humans live in), and a surface to feed on. The easiest way to prevent mold from growing in your home is to cut off its access to moisture, mold requires that there is a lot of mois