Parents: Teens Are Still Vaping, Despite Flavor Ban. Here's What They're Using KUNC Petition Vote No on the Denver flavor vape ban Denver, United States Change.org Will you vote to repeal a ban on flavored tobacco in Denver?, Referendum 310 is on your ballot this year. If a majority of voters vote yes the city will continue to ban flavored tobacco products. If Denver ban on flavored nicotine products goes into effect with new year Aspen becomes first city in Colorado to ban the sale of all flavored nicotine products VailDaily.com Colorado Flavored Vape Ban Voted Down in Big Loss for Prohibitionists