This may be elementary to some who are veterans or have been vaping for a few months, BUT,
are you sure you shake your juices really good before you use them.
Back in my Noob days I did what most do, get the juice squirt it in whatever you use and expect it to be awesome, and then OMG, but my description was bug spray in your mouth.
Well the vendor was very kind and took care of business, but I didnt shake the bottle before i used it. The flavoring is heavier than the base depending on what you are vaping, so the flavor can settle to the bottum and when you tilt and squeeze all yo are getting is, base, nic juice, or whatever else maybe be in your mix.
I learned that the hard way, seemed like all the ones I ordered from the same place always were nasty, well 2 times , lolol
someone asked if i shook the mix first....
That took care of that.
since then I mix my own, but i still SHAKE LOLOL
good luck in getting rid of the taste, and always , VAPE ON!!!