Colorado flavor vape ban fails again China Vape Factory Vape shops challenge Denver's flavored tobacco ban in court Colorado Politics Colorado Begins State Ban On Vaping In Most Public Places KUNC 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 ban on flavored nicotine products goes into effect as the new year kicks off Denver's ban on flavored tobacco takes effect in 2025