Our daughter, the writer Cyndi Phillips (that's not her nom de plume, that's her chosen name (her real name is Cynthia)) once developed categories for leftovers:

Category 1

It's just food, nuke and eat

Category 2

Borderline -- parents will nuke and eat

Category 3

It's come back to life, science fair project

Category 4

Don't even try to save the container; toxic waste

Now, you can save the Rubbermaid without throwing up!! Here's the tip:

1. Freeze the whole mess without opening -- outside, climate permitting, in the freezer if necessary.
2. As near as possible to your trash pickup day: Go to your trash receptacle with
   • the Category 4 object, still frozen
   • a zip-lock bag
   • a container of liquid bleach
3. empty the frozen contents into the zip-lock, seal, and discard
4. pour a little bleach into the contaminated container, seal, and shake gently
5. take the closed container and the bleach back inside
6. after allowing a couple of hours for the bleach to destroy all organic material and life-forms in the container, open under a sinkfull of water, rub quickly with a paper towel, and wash the container as usual