The Synthetic Nicotine Loophole Fueling a Return to Teenage Vaping The New York Times Nicotine isn't the only hazard to be found in e cigarettes Chicago Tribune FACT: Most e cigarette users also smoke cigarettes, a pattern known as dual use. This means the tobacco industry isn't helping people quit; it's sustaining addiction through another product. While the industry claims E Cigarettes and Vape Pens Tobacco Prevention Toolkit Stanford Medicine FDA clears first menthol e cigarette for adults