I'm surprised you get such a smell in Aridzona, especially in between cooks. I've never had that happen. Perhaps you didn't season the cooker well from the get go, or you left something nasty in the chamber at one point. How is the cooker stored? All should really need to do between cooks is rid the chamber of excess grease, clean the water pan if you go one, and clean your grates a bit. The smell of cooker between cooks should smell like, a smoker oddly enough. I wonder if what you smell is normal and you just don't know it. Do you see fungus growing, or maybe see BRD's old teeth protruding from the baked in sides? IF it doesn't smell right - I'll trust your judgement and recommend that you clean it real well with a pressure washer, or simple green (or other degreaser) and a hose, then reseason it.