I find that vaping the same flavor for awhile will kind of "numb" my taste to that flavor; this is a shame bc I usually only have 1-2 flavors going at a time and my preference is to find what I like and stick with that. For example, the super strength cake batter I began 2 days ago now tastes like nothing. I had two bottles of a strong flavor called toasted tobacco (my previous daily): one was regular strength, one was not double but TRIPLE flavor... of course I was numbed to toasted after a few days, using the regular strength, and even after switching to the triple-flavor bottle I still had little taste.
I can taste any flavor strongly first thing in the morning & after a meal.
Here is what I have found that works for me:
-Make sure to keep hardware clean & charged, cartos full, juice stored correctly (not in sunlight or intense heat).
-Rotate flavors every few hours, or keep a variety of flavors in rotation.
-Food & drink can help reset the taste buds, or something like that.
-Smoking analogs (or anything else) will dampen taste for at least half an hour... avoid this or be prepared to deal.