Juul study shows secondhand vaping emissions are less toxic than cigarette smoke Secondhand Vape Exposure: Effects, Who's at Risk, and More Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN Health Problems Caused by Secondhand Smoke Smoking and Tobacco Use CDC Does vaping (using e cigarettes) make a difference to our health and are there harms with second hand vaping? iHealth Facts