About six years ago I was diagnosed with COPD. The flare-ups were bad, and I lived on the nebulizer when they occurred.
I lost my wife two years ago this September. She was a heavy vape user. Since her passing, I have not had one flare-up. I am only around non smokers, or vapers now. I believe anything going into the lungs other than good, clean air has a negative effect on our health. I think the jury is still out on vapes being a better solution for the smoker. It could even be worse!