Re: Rubber taste coming from new hookah?
Like some have suggested already, I would try smoking out of it first to see if the rubber taste still lingers. And not just one bowl either, sometimes the hose has a rubbery smell and taste if it is new, so I would clean that out first and then smoke a few bowls before getting a new grommet. If, after you've broken it in and the smell is still there, I would get a new grommet, or try taking a coal off of it.
Current Fave - Hookah Freak Scooby Snacks
Brand Usually Smoked - Hookah Hookah, Hookah Freak, Al Fakher, Starbuzz, Romman occasionally