I am completely ignorant about this (happily!) but when I read this, it made me think for a second about self-mutilators: people that cut, burn etc. themselves to "feel better" somehow. I do not understand the dynamics of that, but snorting Comet would rank up there to me. Having accdidently had a little of the "Comet dust" get in my nose before, I know that it really burns. Well; for what it is worth, thought I would throw that out there. Good luck. I will be interested to see what people know about this.