i still don't understand. it's against the laws of physics if you suck from the steamroller to have it go into the bottle. thats the only part i dont get. maybe if you brought the smoke into the steamroller and then blew it through the bottle, but other than that i don't see how you could suck one way and have it go the other, not to mention you'll be sucking water into the steamroller's tube. or is this the objective? i don't know i'd have to try and make one. good idea, keep developing it.