Is Vaping Banned In California? CASAA Explains the Flavor Ban Flavor bans are harm, not harm reduction The Downey Patriot Proposition 31 in California brought the "flavor ban" to protect minors from being marketed to and reduce the harm caused by flavor chemicals. Flavored e cigarettes and nicotine pouches are still being acquired Parents: Teens Are Still Vaping, Despite Flavor Ban. Here's What They're Using Vermont Public Researchers: Flavored E cig ban could derail smoking cessation efforts