I've never had this happen before. Generally ordering from madvapes has been a woderful experience. I've been ordering lemon blueberry cotton candy in 10 ml at a time. Everyone of them has looked good and has tasted great. So I order a 30 ml. When it came in, it looked darker and tasted pretty decent. I put it in my vaping cabinet and never placed it anywhere else. After about a week, I noticed it getting darker and thicker. Two more weeks went by and it was actually becoming dark and opaque and has no taste at all. What's going on? Can this be fixed? Do I need to stay away from 30 ml flavors? This was my first time purchasing a 30 ml. Also never kept the cap off except to fill and it went back on.