D.C. bills would block e cigarette sales without a prescription, ban flavored products The Washington Post 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 Board of Health bans flavored vaping products Washington bill looks to ban flavored vapes, tobacco products Laws restrict U.S. shipping of vape products. Many companies do it anyway. The Washington Post