Is Vaping Bad For You? Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN Vaping substantially less harmful than smoking, largest review of its kind finds King's College London Vaping: what we know and what we don't about e cigarettes How Vape Detectors and Sensors Work: An Informative Guide Youth and vaping: No such thing as risk free Hamilton Health Sciences