Hi Stacy1. I just thought that I would let you know that I also get a very strange smell on my breath when I get into a bad bout of migraines and chronic pain. My husband says it is something like a burning brakes smell, which is fitting because that is exactly how I feel.
Anyway, I just thought that you might want to know that you aren't alone. When I told the neurologist about the strange chemically smell that my husband noticed on my breath, I think he thought that I was crazy, but it is nice for me to know that someone else has noticed this problem as well. Good luck!