Welcome Lifeisgoodlady! We have a "life is good" man here on the forums as well! It's a good mantra, for sure.
I've been on metformin for nearly 5 years now, and while I have noticed different odors when I sniff the prescription bottle, I've never had that on my skin. Are you perspiring a lot? Is your blood usgar under good control? Sometimes when my blood sugar is high or low, i'll sweat, and that sweat does seem to have a different odor than regular "working hard in the heat" perspiration.