Hack Of The Night : How to get the smell out of food containers you’ve already washed

You might have been storing something in a container and it either ended up spoiling, or it's just something smelly to begin with.  Then after you get rid of the thing and wash the container, it still smells.  What to do?  Toss it out, or save it?  Here's a way to get the smell out AFTER you've washed it..