Radon is an odorless, tasteless gas produced by the decay of uranium. Radon is found in various locations throughout Tennessee in the soil. Radon is radioactive. When radon is inhaled it can damage lung tissue and possibly result in lung cancer. UT Extension Health & Safety specifies that Smoking in an area with a high level of radon puts your family at a much higher risk to get lung cancer.
https://www.eliteservicesnetwork.com/united-states/nashville/professional-services/radon-1