Vaping is often seen as a less harmful alternative to smoking, but since it is still relatively new, there is no way to study the long term effects. Both vaping and smoking irritate 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. Just How Harmful Is Vaping? More Evidence Is Emerging. The New York Times Full article: Rapid Determination of Formaldehyde, Acetaldehyde and Acrolein in Electronic Cigarette Aerosols by Direct Mass Spectrometry with Evaluation of the Toxicity