Secondhand Vape Exposure: Effects, Who's at Risk, and More 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 Thirdhand Smoke Resource Center Protecting Californians Is Secondhand Vaping Harmful To Your Health? Evidence Mounts About the Health Impact of Second Hand Vaping Bisnar Chase