This answer is not meant to scare you, but it is real. Mold can grow in the lungs and on the spine. It can cause paralysis, eye fungus, and the toxic effects of fungal exposure and deadly mycotoxins can compromise the immune system. Reoccurring bronchitis is commonly caused from tainted indoor environments. Too many times, testing and removal is performed after the damage is done, this is why we promote the eradication of even the possibility of mold, especially in surroundings that you spend most of your time in. In rare cases, mold can even produce arsenic gas and cause permanent brain damage. People that suffer from allergies, breathing impairments, nasal and sinus congestion, nose and throat irritation, and migraine headaches should make a call to GREAT their Top Priority.