Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN Researchers Warn of Potential Harm From E Cigarette Secondhand Vapor AZPM Does Vaping Cause Secondhand Smoke? When someone vapes around others they expose them to 'second hand aerosol'. But what happens to that aerosol then? Does it disappear or is it like cigarette smoke and stays around, sticking to Second hand vaping exposure very low compared to second hand smoking UCL News UCL University College London 5 Vaping Facts You Need to Know Johns Hopkins Medicine