The Not So Hidden Dangers of Electronic Smoking Devices Person exhale electronic cigarette smoke cloud closeup 72461652 Stock Photo at Vecteezy Older users of e cigarettes at greater risk of respiratory illness, study suggests CUNY Graduate School of Public Health & Health Policy E Cigarettes: Patent Analysis and Technological Evolution by Copperpod IP Medium E cigarettes and health: the jury is still out Harvard Health WHO Urges Stiff Regulatory Curbs on E cigarettes