Denver Vape Shops Face Cloudy Future After Election Loss Vape shops challenge Denver's flavored tobacco ban in court Colorado Politics Denver's flavored tobacco ban: What voters need to know before November Denver Gazette A group of vape shop owners is backing a newly filed lawsuit challenging Denver's ban on flavored tobacco products, arguing the ordinance is unconstitutional and unfairly targets their industry. (KDVR) Denver's city clerk says enough signatures were gathered to send repeal of tobacco flavor ban to voters