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. Tobacco Smoke, Vaping, and Asthma AAFA.org Health Risks of Secondhand Smoke and Aerosols Factsheet US EPA Secondhand Exposure to E Cigarettes Puts COPD Patients At Risk Respiratory Therapy Does cannabis create thirdhand smoke? Thirdhand Smoke Resource Center Second hand vape smoke linked to more asthma symptoms in kids