I would love to say that some little boy put his silly putty down on my knitting, however, I take full credit for that. I took it away from him after he repeatedly put it in his mouth, and put it on the book that was sitting on top of my project. Somehow, it melted (in our cold house). Weird.
It has already made a trip to the freezer where it hardened and I was able to pick most of it out. Unfortunately, I was unable to get it all out without damaging the fibers. I am going to risk it, keep knitting on this project and hope that it will wash out with one of these helpful tips. I'll let you know if it works.

You know, just in case this happens to you. (ha!)