TALLAHASSEE, Fla. (WTXL) — Florida state leaders advocated for legislation banning retail nitrous oxide sales Thursday after deaths from misuse. Lawmakers and supporters argue nitrous oxide poisoning is a threat to Florida families. Florida lawmakers push to ban retail nitrous oxide sales after death concernsBROADCAST TRANSCRIPT:State leaders met at the Florida Capitol Thursday to push for a ban on the retail sale of nitrous oxide, a substance they say is being misused and putting lives at risk. Among those speaking out is Kathleen Dial, whose sister Meg died from nitrous oxide misuse. “The misuse of nitrous oxide is a quick and intense high, so it can get out of the system very quickly within a few minutes.