I have it,yuck! Did some searching here and just today I started adding a bit of concentrated lemon juice to my water drink and did some tongue scraping,sounds gross but it is working..I'll get a device from a drug store for the tongue in a few days..I won't go into details but I used a spoon and tooth brush...I usually vape slightly sweet tobacco juice..I have always used Vermillion River KPB or Kmax..I tried their Black label and loved it,then all of a sudden no flavor..So with the lemon water and scraping in one day I'm about half way back to normal..I can now taste the great flavor of the Black label again,not all the way but better..FWIW this worked for me,Bob