The ice I chew on is chunked, all different shapes & sizes, usually clear, but sometimes I'll find a "foggy" piece (those are THE BEST!!). Every once in a while, I will get a "funky" tasting one. I always wonder about it, but then I chew it anyways, and try not to let it bother me. Ya know, try not to think about why it might tast "funky"......But I don't think I'll ever stop....Love it toooo much!!!