The Real Threat? The Hypocrisy Behind Flavored Vape Bans Vape shops facing strict ban despite US state allowing sales Vaping in public in Dallas can now lead to a fine of up to $500. As of Dec. 10, vaping is prohibited in public and enclosed spaces, including bars, workplaces, parks and other areas designated as If the bill is signed, Washington will become the second state to ban the sale of nitrous oxide, which has grown in popularity and misuse.