Juul study shows secondhand vaping emissions are less toxic than cigarette smoke Second Hand Vaping: Minimal Impact Compared to Smoking Vaping Versus Smoking: Are Electronic Cigarettes the Savior? Arteriosclerosis, Thrombosis, and Vascular Biology The Impact of E Cigarettes and Asthma: What You Need to Know Protecting Youth From the Harms of Vaping Smoking and Tobacco Use CDC Tobacco Smoke, Vaping, and Asthma AAFA.org