Dangers Of Second Hand Vapes Can Disposable Vapes Cause Secondhand Vapor Second Hand Vape Smoke Dangers 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 smoke, smoke free spaces and the law Ottawa Public Health Second hand vaping exposure very low compared to second hand smoking UCL News UCL University College London