I am running into the same situation, and also still smoke as well.  After asking around a bit, many other have told me that the smoking is more than likely the cause.  I have a couple of juices that taste pretty good, but many that just don't - or even close to what they're supposed to taste like (to me, at least).  I also believe that while everyone and their grandmother suddenly becoming mix-masters, that has something to do with it.  I hope to give up the analogs soon and go 100% to vaping full time, and to he honest with you, probably the one single thing slowing that process is finding something - anything - that will satisfy me full time (to vaping).  I'll be interested to see what others have to say here about your question!  Good luck!!