Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN E Cigs and Second Hand Vaping: Dangers and Protections Secondhand Smoke and Electronic Cigarette Aerosols US EPA Second hand vaping exposure very low compared to second hand smoking UCL News UCL University College London Differing Opinions About Second Hand Vape Exposure Vaping Post HEALTH Does vaping cause secondhand smoke? Doctors explain the side effects: Details below.