Ban now in effect against non FDA approved vapes sold at Mississippi stores, shops 2FIRSTS U.S. vape firms appeal Mississippi synthetic nicotine ban, citing FDA authority preemption Teens Find a Big Loophole in the New Flavored Vaping Ban The New York Times Mississippi vape ban leaves Byram smoke shop struggling with empty shelves Federal flavor ban goes into effect Thursday, but many flavored vape products will still be available