What's in Vapes? Escape The Vape Hawaii Formaldehyde in Electronic Cigarette Liquid (Aerosolized Liquid) Jenna L. Ruggiero, Lindsey M. Voller, Javed A. Shaik, Sara Hylwa, 2022 Formaldehyde In Vapes Is It A Concern? E LIQUIDS UK Daily exposure to formaldehyde and acetaldehyde and potential health risk associated with use of high and low nicotine e liquid concentrations Scientific Reports Harmful chemicals emitted from electronic cigarettes and potential deleterious effects in the oral cavity Testing has revealed what we already knew illegal vapes are filled with dangerous levels of addictive nicotine and laced with chemicals including formaldehyde and antifreeze components.