I've noticed an odd thing: On days I paint (I'm painting my house) my
BG control is not good. My Bg levels creep up throughout the day,
often adding 20 points to my normal pre-meal levels. Also, I seem to
be more carb sensitive at those meals, and even a very low-carb one
will increase my BG levels. The effect seems to last for several hours
after I stop painting.

I only noticed the connection today, but my logs are clear: I've seen
anomalous readings every time I've painted.

The paint is oil based, and I'm using both a semi-transparent stain
and a solid. I do wear a respirator while spraying, but not while
brushing (I'm working outside).

Has anyone ever heard of anything like this occurring?

I am almost done with the painting, only a few more hours worth of
touching up to do. I'll wear a respirator for that and see if it makes
any difference.

One last thought: could paint thinner be the culprit, via trans-dermal
absorption? I use it to get the paint off of me.