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 Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN Juul study shows secondhand vaping emissions are less toxic than cigarette smoke The risks of first hand and second hand vaping Eoleaf