2FIRSTS Proliferation of Large Puff Vapes in U.S.: Why Are Manufacturers Producing "Big Mac"s? Exemption in vape rules allows continued sale of flavors WXXI News Geek Bar Pulse X Disposable Vape Big Mo's Fruity flavors lure teens into vaping longer and taking more puffs, study says Los Angeles Times Parents: Teens Are Still Vaping, Despite Flavor Ban. Here's What They're Using Vermont Public