E cigarette aerosol isn't just water vaporit contains toxic chemicals like formaldehyde and acrolein (yes, a weed killer!). Vaping can lead to lung disease, Popcorn Lung, and even a collapsed lung. Plus, secondhand Clearing the Air: Do Vapes Still Contain Formaldehyde? Does Formaldehyde Make E Cigarettes Worse Than the Real Thing? Take it from a taxidermied critter: Vaping formaldehyde is no good The Real Cost Is Formaldehyde in Vapes? Formaldehyd Zigaretten Aren't Vapes Just Vapor? Nope. Some Vapes Contain Formaldehyde, An Formaldehyde Harmful Vape Chemicals Australia