Secondhand Smoke vs Vape: What the Science Says 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. Solving secondhand "vape smoke" at workand at home Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN Study finds secondhand smoke may be source of lead exposure in children, adolescents Vital Record