Federal flavor ban goes into effect Thursday, but many flavored vape products will still be available California's proposed flavored tobacco ban gives hookah a pass New Study Shows E Cigarette and Cigarette Sales in California Have Declined Following Law Banning Flavored Tobacco NEW STUDY: California Flavor Bans Linked To Lower Youth Vaping Without Raising Cigarette Smoking A new study published Friday found that local bans on flavored tobacco products in California were linked to California's flavored tobacco ban won't be blocked by supreme court