If the bill is signed, Washington will become the second state to ban the sale of nitrous oxide, which has grown in popularity and misuse. Are Flavored Vapes Banned in Your U.S. State? Check the Latest List Washington bill looks to ban flavored vapes, tobacco products Washington State Bans Flavored Vape Products, What you need to know D.C. bills would block e cigarette sales without a prescription, ban flavored products The Washington Post