The risks of first hand and second hand vaping Eoleaf Secondhand Exposure to E Cigarettes Puts COPD Patients At Risk Respiratory Therapy E Cig Vapor Or Secondhand Smoke: Which Is Worse For You? Health Risks of Secondhand Smoke and Aerosols Factsheet US EPA Understanding Secondhand Vape Dangers and Their Impact on Your Lungs Sitting somewhere when a cloud of cotton candy vapor washes over you? If you can smell the sweet scent of a vape, that's not a great sign.