elf bar vape uk Diacetyl: Is it a danger for the e liquid? Our expert advice! la cigarette lectronique encore victime de dsinformation au sujet du diactyle blog le petit vapoteur Vapes don't produce harmless water vapor. They can contain addictive nicotine, cancer causing chemicals like acetaldehyde and formaldehyde, as well as heavy metals that don't belong in your body. Live Vape Free is DYK? Vaping coats lungs with potentially harmful chemicals. This can include chemicals such as: Diacetyl: This food additive, used to deepen e cigarette flavors, is known to damage small passageways in the lungs.