Several hours and bottles of water later, I do believe I'm past the halfway point in my recovery from my inadvertent venture into chemical warfare with my bathtub. Thanks for all your thoughts and good wishes, y'all.
Still feel lightheaded and have a woozy tummy, plus achy eyes -- but other than that, I'm good old me.
When doing a debriefing with the mister, I realized that not only was I using Comet and KABOOM!, but also some stuff to zap the mold in the corner tile and Clorox wipes on the sink.
That's a lot of molecules floating around.
Remember Chemical Ali... just call me Chemical Jane. And heed my warning, y'all. Housekeeping is a dangerous, dangerous thing. Only engage in it when absolutely necessary.
However -- that damn bathtub has never looked better. Thank goodness.