I recently purchased from exotic vapors/ bootleg vapors. I got their caffeinated coffee, monster, blueberry 420, skunk 420, and mint chocolate chip. So far, the blueberry 420 has tasted better with steeping. both the coffee and the 420 flavors make me feel sick for some reason. i really like the monster, and the mint chocolate chip isn't bad either. I noticed that the coffee and blueberry flavors left an odor in my tank. how do i get rid of it? What's your input?