Tennessee Code Title 39. Criminal Offenses § 39-13-804

(a) The intentional release of a dangerous chemical or hazardous material utilized in a lawful industrial or commercial process shall be considered use of a weapon of mass destruction when a person knowingly utilizes those agents with intent and for the purpose of causing harm to persons either directly or indirectly through harm to animals or the environment. The release of dangerous chemicals or hazardous materials for any purpose shall remain subject to regulation under federal and state environmental laws.

(b) The lawful use of chemicals for legitimate mineral extraction, industrial, agricultural, commercial, or private purposes, such as gasoline used to power engines or propane used for heating or cooking, is not proscribed by this part.

(c) No university, research institution, private company, individual, hospital, or other health care facility shall be subject to this part for actions taken in furtherance of objectives undertaken for a lawful purpose; provided, that such actions are taken in connection with scientific or public health research or are necessary for therapeutic or clinical purposes, and, as required, are licensed or registered with the centers for disease control and prevention pursuant to the Code of Federal Regulations (CFR) or other applicable authorities.