Approximately 16,000 unique flavours have been identified for vapes, many of which appeal to potential users. Some flavours increase the toxicity of vape emissions and can generate compounds that are known to Evidence update on the cancer risk of vaping e cigarettes: A systematic review FDA warns Juul, says it marketed vapes as less harmful than regular cigarettes without agency authorization The Washington Post FDA orders Juul e cigarettes off the market in the U.S. STAT JUUL Faces Wrongful Death Lawsuit as Vaping Injuries Surge F.D.A. Approves Juul Vapes After Yearslong Delay The New York Times