
97Mold and Environmental Problems
inert radon parent. e active progeny can become airborne by attachment to other air-
borne particles and can be deposited in the lung. e adverse health eects are a result
of the decay products of radon so that when assessing the dangers imposed, the measure
is the level of radon rather than the measure of the other by-products.
Radon is chemically inert, colorless, odorless, and a tasteless radioactive gas that
enters a house or a structure through leakage paths in the foundation. ese paths are
produced by pressure-driven ow from the ground to crawl spaces, to cracks in the foun-
dation, through porous block ...