San Francisco's ban on flavored vape products led to 30% increase in teens smoking cigarettes San Francisco banned the sale of flavored nicotine products in 2018 in hopes to protect children from using the drug Instead, according to a study, use of cigarettes increased among youth by 30 percent Many other jurisdictions across the country have either banned, or plan to ban, flavored nicotine products FDA may also ban menthol cigarettes in a similar move against flavored nicotine products