Modifies provisions relating to smoking regulations

HB 1903 corrects a misleading title by replacing tobacco-focused smoking laws with new regulations specifically governing **marijuana use**. The bill bans marijuana use in public elementary/secondary schools (including school buses), child care facilities (while children are present), and indoor areas of "public places" like restaurants and retail stores. It also prohibits employers from discriminating against employees who use marijuana off-premises (outside work hours) unless it directly interferes with job performance. Key exceptions include private residences, large venues (over 15,000 seats), and businesses that prominently display "no smoking" signs. This replaces prior tobacco regulations with marijuana-specific rules, effective upon enactment.