Hi. Quick question. I have been vaping for a few months, and I use a few different flavors of e-juice. I have a separate tank for each flavor. My favorite was a Caramel Mocha juice, 24mg. It's from a local vape store, 50/50 pg vg mix. It had just kind of a light, nutty taste that I really liked, but after about 2 weeks, it's started to taste strange. It doesn't taste burnt, or... I don't know, "moldy" or anything... but it does have this weird plasticky flavor that it did not have initially. The bottle is relatively new. I put this juice in a different tank, just to make sure the tank hadn't done something funky, and same thing. Is it possible for it to have gone off this quickly? I have several other flavors from this same company- some of which are older than the caramel mocha, and they are all fine. What the heck? Any ideas? It's a 30ml bottle, so I hate to waste it, but it's pretty nasty. Thanks in advance!