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 Second Hand Vape Smoke Vs Secondhand Cigarette Smoke Are vape pens, or e cigarettes, ever the E cigarette ads spread like second hand smoke on Twitter TheHealthSite.com Study shows second hand vaping exposure very low compared to second hand smoking Vaping, Second Hand Smoke, and Kids Medical Associates of Northwest Arkansas