This is something that I never thought about before, and is unfortunately glossed over too often. We’re exposed to things all the time, but only get sick when t

This is something that I never thought about before, and is unfortunately glossed over too often. We’re exposed to things all the time, but only get sick when the exposure is large enough to sufficiently overwhelm our innate immune system. The degree to which it is overwhelmed correlates strongly the the severity of the subsequent illness. Reducing exposure time, or exposure volume via air dilution or filtration can make a massive difference.