Why is Mold Dangerous? 

Mold is a microorganism that is capable of triggering allergies, illness, or in the worst-case scenario, hazardous breathing problems. Long-term exposure to mold damages your respiratory system, so a moldy crawl space is a health hazard. Even if you don’t spend much time don’t in your home’s crawl space, mold can still cause health problems because of the stack effect which moves mold spores into your home as warm air rises.