Can I be Affected by Secondhand Vape Smoke? Is Second Hand Vapor from E Cigarettes Dangerous? [Infographic] Techno FAQ Juul study shows secondhand vaping emissions are less toxic than cigarette smoke 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% Secondhand vape exposure: Risks and side effects What Are the Risks from Secondhand Vape Smoke? NVB Inc.