Mold spores occur naturally everywhere in our environment. They are in the air you breathe indoors in your home and workplace, and they are in the air we breathe outdoors. The vast majority of us have developed an immunity to mold, much like the immunity you may have developed to the previous year’s flu strain. Mold is primarily a health concern if you are allergic to it, are asthmatic, or possibly immune compromised. See the FAQs on this page for some common questions and answers regarding mold.