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? 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. formaldehyde? was that always in our ejuice ,or was it just added ? : r Vaping Vaping Study Finds Formaldehyde In The Juice