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. The risks of first hand and second hand vaping Eoleaf Does Vaping Cause Secondhand Smoke? Secondhand Exposure to E Cigarettes Puts COPD Patients At Risk Respiratory Therapy Health Risks of Secondhand Smoke and Aerosols Factsheet US EPA Understanding Secondhand Vape Dangers and Their Impact on Your Lungs