Specifically, deliberately, and in particular I use no safety glasses, no respirator, no lab coat, and no gloves. From years as a laboratory bound analytical chemist I reckon safety is the outcome of steady and systematic work practices. The only concession I make is to use bamboo tongs to avoid contact with chemistry not from fear of poisoning but to avoid cross contamination of processing solutions. BUT:
Some people should wear spacesuits in the darkroom. They are that messy. I remember a student darkroom that, after a year or so of activity, had selenium toner stains up the wall behind the sink and on the ceiling 6 feet above the enlarger bench. What the hell went on in there I don't know!