Thanks. Yes, I didn't go to the doctor, but I should have. The exposure to the chemicals left me completely debilitated for a week or so, severe nausea for about 4 days, and a really nasty sore throat for about a month. I was printing with very large trays (large prints) which, I assume, would give off more vapor than a smaller tray. I would feel more comfortable to wear a respirator at least when processing film (in trays). I don't think I will be comfortable again without one (Nosemaphobia).