I've been using this Mini Protank for cinnamon and the flavor wouldn't come out with water. so I decided to soak it in vodka. After 3 days I pulled it out and found that the top ring (under the trip tip) had red metal showing through. The bottom ring (where the coil screws into) had blackish discolorations and when I wiped it, the black came off. This really makes me wonder what I've been vaping. Has anyone else had this happen before? I bought it from a reputable vender.
