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 Tobacco Smoke, Vaping, and Asthma AAFA.org Effect of second hand fumes from vaping on young lungs Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN