I've never had that happen! LOL If anything, people AVOIDED me--probably because I looked drunk or drugged. People must be nicer where you live!
Now there have been times when I have been at social events with people I didn't really know, and my voice would tend to "give out" after 5-10 words. I would always tell my hub before we went to the party to "step in and explain" if that happened, as I literally would not be able to speak.
I think a few times I told people "I'm a Jerry's kid" to diffuse the looks before anyone could avoid or ask if I needed help. Usually that would bring some intelligent questions, and often a story of the person "they once knew...."
I think having your helper explain would be a great plan, and you could save your energy for trying to "escape" with as much dignity as possible.
MG sure keeps you guessing, doesn't it?