Formaldehyde is used to preserve dead bodies. This same cancer causing chemical is also found in vape juices. Vaping may look harmless, but looks can be deceiving. Read "Public Health Consequences of E Cigarettes" at NAP.edu A Device Independent Evaluation of Carbonyl Emissions from Heated Electronic Cigarette Solvents PLOS One Daily exposure to formaldehyde and acetaldehyde and potential health risk associated with use of high and low nicotine e liquid concentrations Scientific Reports La vape , un march en pleine mutation E cigarettes examined: Do they contain formaldehyde?