When diluted vinegar didn't get the stink out of my plastic mixing cup, I thought it was over.
But thanks to Elle, it's smelling clean and ready to use again! She suggested hydrogen peroxide and I said Why Not? So I filled the cup with 4 oz hydrogen peroxide and 12 oz water and let it sit overnight. Actually, it was about 13 hours!!
And what do you know?! It's saved!
Thanks a bunch Elle!