you dont, you use sciccors to cut/pry (very easy) off the very tip metal circle at the top, then you have an opening. then you take the sciccors and just mash around in there to get all the extra gunk and shit looose, and crack off the black part near the top. the metal part stays on
about the smell, theres no smell if you do it right, if it smells, its like burnt popcorn, actually kinda good. tastes very pure, this is what im hitting b4 and after a concert tommorow, cause we gotta hit in the basement of my friends house w/ 3 adults in the house. their not nearly as fun as smokin, but get you retarded on hardly anything and are very secret. good luck byrce