How Old Do You Have to Be to Vape? Vaping360 Restricting flavored e cigarettes cuts vaping rates but raises smoking rates for young adults, study finds Vaping Taxes by State, 2026 E Cigarette and Vape Tax Rates Nicotine Parent UP KC Missouri's attorney general and governor say they are working to tighten enforcement of vape sales after a First Alert 4 investigation exposed shops selling to underage customers.