Section 468A.655 - Prohibition on sale or promotion; exemption for medical use(1) Unless otherwise provided by law, after March 1, 1977, no person shall sell or offer to sell or give as a sales inducement in this state any aerosol spray which contains as a propellant trichloromonofluoromethane, difluorodichloromethane or any other saturated chlorofluorocarbon compound not containing hydrogen.(2) Nothing in this section prohibits the sale of any aerosol spray containing any propellant described in subsection (1) of this section if such aerosol spray is intended to be used for a legitimate medical purpose in the treatment of asthma or any respiratory disorder; or such aerosol spray is intended to be used for a legitimate medical purpose and the State Board of Pharmacy determines by administrative rule that the use of the aerosol spray is essential to such intended use.