Have you ever seen a product called "Dip It"? I use this to clean my coffeemaker (also a Mr. Coffee) and dishwasher from time to time. It's a powder you mix in hot water. Works for me. I've never had smells.

Try this. In the past I've found slime in my coffeemaker. Clean everything well with a little bleach or vinegar in fresh dishwater (1/4 cup with 1/2 gallon of soapy dishwater) and (spray) rinse with the maker upside down over the sink to keep those electronic parts dry. Let it dry completely so it will kill off any remaining germs. You can use a link-free towel to remove most of the moisture, and a hair dryer if you really miss your coffee or if you even think that you've got the electronic parts wet. Because electrics and water do not get along well and you don't want to fry your coffeemaker.

*If coffeemaker is in real bad shape, clean well, then perk 4 cups of vinegar with filter in place. Pour perked vinegar into the maker again but do not run it for 20-30 minutes. The vinegar sits inside the reservoir and hoses, breaking down impurities. After it's perked, perk water through the maker 2-3 times or until you can't smell the vinegar. Dry coffeemaker completely. *Beware, if you use bleach, only let bleach sit hot in the pot for 4-5 minutes and make sure to allow plenty of fresh air, or sit the maker in a room with an exhaust fan while cleaning/perking. Then perk water through it 3-5 times, rinsing and drying everything very well to remove the strong odor of bleach.

Now, after coffee is done perking, open the lid to let it dry out until the next pot is made. I'm back to washing my coffeemaker once a month or so as I don't see or taste anything funny anymore.

This is the same recipe for cleaning those yellowing plastic lids. (1/4 cup vinegar and 1/2 gallon of soapy dishwater)

Thank you for the tips! I used dip a long time ago..it used to be sold in the coffee section, but haven't seen it in a long time. I will try the vinegar & water method..