BREAKTHROUGH NEWS: Doctors just announced that vaping has been conclusively linked to permanent lung disease. Sadly, many teens have already been diagnosed. Diacetyl, or 2,3 butanedione, is a flavouring agent that becomes a Do Disposable Vapes Have Diacetyl? Safety & Ingredients Diacetyl: Is it a danger for the e liquid? Our expert advice! A&L Diacetyl In Welchem Vapes Which brands contain diacetyl in their vape juices? Knowledge Diacetyl notice! : r Vaping 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.