There's an article from the USA where the oil from vaping is attached to the lungs, and could be more dangerous than smoking.
The truth/research will take years to come out, as it did with the truth about tobacco.
Vaping-related lipoid pneumonia is the result of inhaling oily substances found in e-liquid, which sparks an inflammatory response in the lungs. Symptoms of lipoid pneumonia include: Chronic cough. Shortness of breath.
The best way to stop smoking is to go cold turkey, Mrs and I both stopped 6 yrs ago, my mate stopped 5yrs ago by starting vaping, but he is still vaping today and admits he would struggle to stop.