Does Vaping Cause Second Hand Smoke V2 Cigs UK Woman Vaping Man Suffering Secondhand Smoke Stock Photo 2692131685 Shutterstock Secondhand Smoke and Electronic Cigarette Aerosols US EPA Secondhand e cigarette vape smoke exposure increased in last 4 years, contain harmful toxins: JAMA Network study ABC7 Chicago Tobacco Smoke, Vaping, and Asthma AAFA.org Just How Harmful Is Vaping? More Evidence Is Emerging. The New York Times