Anyone ever have any type of physical reaction with exhaust paint?

I sprayed down the mid-pipe I welded up for my car the other day with some silver high temperature exhaust paint (1200F) that had Ceramic in it. I was handling the pipe over the last 45-min or so to trying to put it back up into place and I violently broke out into hives?!? The paint is obviously dry, but as with almost all silver paint, some of the residue still comes off in your hands when you touch it.

I haven’t hand anything to eat or drink recently that could have otherwise caused it and I’m wearing the same work clothes I wore when I originally painted it up the other day. My guess is that whatever residue that got onto my hands, was absorbed into my blood stream. I feel fine otherwise, but I’m itching like crazy.

Of course I don’t have any Benadryl around, but I just took some other sort of anti-histamine I found laying around to try to combat the reaction. I think I’m over the worst of it, but I’d wondered if anyone else has experienced anything like this with this or any other kind of paints?