Ok guys right off the bat I'm going to say i was a heavy smoker, and there is no way in hell anyone could ever convince me that vaping is anywhere near being as bad for you as analogs. However, one of the reasons i switched to vaping is to not only get away from the smell, and the harmful chemicals, but Tar that weighs you down and collects in your lungs. Yesterday i went to try a clean a replacement coil and i actually for the first time realized how much nasty black gunk build up was on the coil. Now i know thats the source that directly burns the vapor to heat it up so it can turn into vapor but,if all of that gunk can build up on the coil (reminding me of tar) cant all this vapor be turning into gunk in our lungs??? has there been any type of studies on this?