According to a Centers for Disease Control and Prevention (CDC) study, 40% of U.S. adults believe that children's exposure to secondhand aerosol from e cigarettes causes only some or little harm, and 5% Symptoms Of Second Hand Vape Smoke Can Second Hand Vape Smoke Affect Pregnancy The Real Risks of Vaping While Pregnant 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 Can I be Affected by Secondhand Vape Smoke?