I had some juice i really liked. I got distracted filling my ego tanks the other day and left it open for a couple hours. The next time i filled my tanks and vaped that juice, it had very little vapor and not much taste. It is 100% vg from what i can tell. I read somewhere that juice can spoil, and wondered if that wasnt the problem. It was on a fresh atty, so im not sure that was the problem. I let it work in, and it still doesnt have any flavor or vapor! How can i tell whats wrong, and if my juice is spoiled? 
