Teen Smoking UT MD Anderson 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 New study comes the closest yet to proving that e cigarettes aren't as dangerous as smoking Vaping vs Cigarettes Health Impacts Compared Vaping releases toxic chemicals, including heavy metals, as well as ultrafine particles that go deep into the lungs. These increase the risk of heart and lung disorders.