Is this mold/rust in Hookah Questions Posted May 29, 2019 · Report reply The pic of the intake ports into the jar do look like rust. Some white vinegar and baking soda should remove it pretty easily, and then polish with some coconut oil to keep the rust away. I'm going with food grade everything because not only am I some kind of hippie/eco nerd/herbalist guy, but it's cheaper, easier on the hookah, and wont impart funky tastes to your sessions. As far as the hose port goes, I would clean in the same way. Though, it does appear that the corrosion (if that's what it is) has began to eat at some of the metal. So maybe use a bit of sand paper or a dremel tool carefully to file the rough spots down a bit, then clean and treat with coconut oil. Hope this helps some!