so bad I can't stand it.....I have tried VINEGAR, BAKING SODA, PLINK, APPLES PIECES, LEMONS PEELS, VINEGAR ICE CUBES, ENZYME CLEANER(this stuff took cat feces & cat pee smell out of a chair) but it won't even touch this smell. It appears very rusted.....inside. I am vegan so there is NEVER any kind of meat or grease of that nature put in it....I luckily have a disposal cover.....I need to replace it....but after replacing other items in a 1971 mobilehome, its NEVER SIMPLE....WHAT WOULD BE A VERY INEXPENSIVE DISPOSAL for me.....?????? are they all universal.....? thank you for all your help! 
