When I told my doctor that I had stopped smoking and started vaping she was very pleased, and when I showed her my vaporizer she asked me to have a puff to let her see how it works, an that was while I was in her surgery. So I think she looks on it as a great idea and not something to be too worried about. After vaping for a couple of months I found myself coughing up a lot of gunk from my lungs and now I can breath better than ever before.