like yum said throw part of a lemon down your disposal. I always did and it spelt great. Even though you have a garbage disposal and its suppose to grind up the little food bits you should probably scrape your plate into the trash first- the less food down the drain the less chance for the icky smell. Depending on how old your disposal is you may want to look into getting it replaced

i do the lemon thing about once a week!

Yum's instructions were dead helpful.

I pour clorox in it to disinfect and let it run for a few seconds. I haven't tried the lemon thing.

Try pouring a box of baking soda down the drain and leaving it for a half hour. Then dump about a litre of vinagar into the drain and leave it bubbling for about another 1/2 hour. Then pour a kettle of boiling water into the drain.

Any citrus peel might help

And Im not sure if its a do or dont but I always poor bleach in mine

Vinegar works for me. And I've substituted oranges for lemons at least once a week.

There are little detergent balls you can buy at the store specifically for the purpose of cleaning your garbage disposal. once i figure out the name of the brand i will post it.

i swear by white vinegar! it's a great, natural cleanser. if my trash stinks, i'll just soak a paper towel in a bit of white vinegar and just throw it in there. works every time. and i do the lemon in the disposal as well, especially if i'm cooking with, like, half a lemon and the other half would just go in the trash. instead, down the disposal it goes.

it might not be draining...i lived in an apt where my disposal wasn't draining all the nasty water and it started to grow and smell badly. i'd try vinegar or a lemon and if it doesn't work, i'd have a plumber look at it.

Another trick with the lemon, lime, or any other citris peel. Rub peel on counter top right after wiping clean. I love that spell in my kitchen.