What harm does second hand fumes from vaping cause to young lungs? Medical experts want to know ABC11 Raleigh Durham Secondhand smoke and secondhand aerosol Is Second Hand Vaping Harmful? EDGE Vaping 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 smoke and secondhand aerosol Sleeping baby safety tip: Keep baby's environment smoke and vape free. Secondhand smoke in areas where a baby sleeps or spends time, like home or the car, increases the risk of health problems.