When I quit with the patch some years ago for almost a month I was hacking ad coughing junk up especially when I laid down at night, it got so bad I had to take cough syrup before bed or I would not get any sleep..
When I started vaping a little over a year ago I lough the same thing would happen, so I go out and get my cough syrup, ready for the coughing from hell I had experienced years before, and not so much a throat tickle.. Noting, nada came up as it did years before..
I did go to the dr. A few weeks ago, and he checked my lungs and said they sound great, over a year ago when I first went in, they sounded tight...so the stuff, tar and such,I am guessing slowly made its way out slowly but surely..
I do know despite what the alarmist's would say, that my lungs feel better than they have in I don't know when..suffice it to say, I have gotten a lot of my stamina back..and it can only get better..