So I've been using it for about a month now or so, and yesterday I started getting this very bad taste, almost like a burnt metal. I went to the store, grabbed some new coils, popped it in, still there, bad enough to almost throw up. I finally found that on my charger for it, there is this black gunk building up, where it connects. I cleaned all of that, the threads on everything, it was all covered in it. It's almost back to normal now, I'm still confused on what/why that is happening though. Fuzion vapor liquid.