lol, someone actually tried to make something similar to that thing from Harold and Kumar? Learn from their mistake, it would probably get called a bomb haha Seriously though, yeah, it's not stealth at all, and I have a hard time imagining how it could be very smell proof. A mini keychain pipe and a carbon filtered sploof is what I would try. Haven't bothered looking into it, but now I'm curious as to how well they work.
I saw copper and brass in there which I'm not positive on this but I heard it's bad to smoke out off.
By the looks of it the glue is on the "exhale" part not the bowl which I assume is on the top or in the middle where the brass is.
that's wuts up...pretty inventive dude...did you build an actual one or is this still in the drawing stage??