I know this topic is rather old, but I still feel I have a valid comment.
I find it scary and deeply disturbing whenever I see people come on here and get great advice from people here - advice that may end up saving their life - just to blatantly disregard this advice because it's too cumbersome for them or they are to proud or know-it-all to take it.
This guy has just been told by multiple users that he is injecting particulate matter (for all practical concerns) straight into his lungs. We're talking about potentially irreparable damage which may end up shaving years off of the posters actual life span. Still, he doesn't give a shit because he heard it was ok from "2 good friends from 2 parts of the country".
I know the whole "you can drag a horse to the water, but not make it drink"-conundrum, but fuck man, we're talking about his goddamn lungs!! I know this sounds harsh, but if you don't have the respect for yourself - or the people who spend their time caring about you - to implement these very small and easy changes, you are asking for whatever might come your way.