Formaldehyde levels in e cigarettes were previously 'underestimated', researchers find The Pharmaceutical Journal E cigarettes can emit formaldehyde at high levels under conditions that have been reported to be non averse to users Scientific Reports E Cigarettes: Know the Health Risks Department of Health Opinion The Formaldehyde in Your E Cigs The New York Times Daily exposure to formaldehyde and acetaldehyde and potential health risk associated with use of high and low nicotine e liquid concentrations Scientific Reports