Re: preping a nammor hose to smoke?
Rinsing. It's pretty simple. Do not use hot water. While it would leech the flavor of plastic out faster it will loosen the glue and make the hose fall apart.
After that it's a matter of smoking out the plastic flavor. Smoke strong stuff for a while and rinse it if the flavor ghosts. Eventually it will have no plastic flavor and be a damn good hose for a while.