E cigarettes can emit formaldehyde at high levels under conditions that have been reported to be non averse to users Scientific Reports Tobacco Did you know #vaping liquids contain formaldehyde and metals? What else isn't the vaping industry not telling you? Facebook WHAT'S REALLY INSIDE YOUR VAPE? You wouldn't drink paint thinner or eat car battery fluid, right? But you might be inhaling their ingredients every time you vape! E cigarettes contain toxic chemicals E Cigarette Smoking May Release Formaldehyde, Other Carcinogens AboutLawsuits.com Vaping: how safe is it? E cigarettes emit very high formaldehyde levels only in conditions that are aversive to users: A replication study under verified realistic use conditions ScienceDirect