Conn. Gen. Stat. § 21a-245

No person shall manufacture, possess, have under his control, sell, prescribe, dispense, compound, process, deliver or administer to another person any restricted substance, except as authorized in this chapter and section 10-212a , except that no vendor of the volatile substances enumerated in subdivision (49) of section 21a-240 shall be deemed to have violated the provisions of this chapter insofar as sale, dispensing or delivering of one or more of said volatile substances or compounds containing said chemical substances is concerned, unless he knew or should have known of the improper purpose to which such substance was to be put. Insofar as substances containing said substances are possessed, sold, dispensed, compounded or delivered for licit purposes, i.e., other than to produce a stimulant, depressant or hallucinogenic effect upon the higher functions of the central nervous system by breathing, inhaling, sniffing or drinking, such substances are expressly not restricted and neither the regulatory provisions, including but not limited to record keeping, licensing and the writing of prescriptions nor the criminal sanctions and proscriptions of this chapter shall apply.