Colorado flavor vape ban fails again China Vape Factory Petition Vote No on the Denver flavor vape ban Denver, United States Change.org Denver Flavor Ban Pushes Vapers to Suburbs Nicotine Insider In what is being called one of the city's most expensive races on this year's ballot, Denver voters are leaning heavily toward keeping the city's ban on the sale of flavored tobacco, Denver's flavored tobacco ban: What voters need to know before November Denver Gazette