Sec. 121.252. REGULATION OF USE OF MALODORANTS. (a) The railroad commission, by rule as necessary to carry out the purposes of this section, may: (1) require a person, firm, or corporation subject to Section 121.251 to odorize the gas by using a malodorant agent that indicates the presence of gas by a distinctive odor; (2) regulate the method of the use of malodorants; and (3) direct and approve the use of containers and other equipment used in connection with malodorants. (b) A required malodorant agent must be: (1) nontoxic and noncorrosive; and (2) not harmful to leather diaphragms in gas equipment. Acts 1997, 75th Leg., ch. 166, Sec. 1, eff. Sept. 1, 1997.