what people wear varies from resident to resident. most wear a washable gown, face shield, gloves, and a cut resistant glove under their gloves. we all gross at reasonably well-ventilated benches which will be improved when we get a brand spanking new gross room (though probably sometime in 2023 due to the crappy economy...)
formalin exposure levels are measured by those badges that we have the PAs wear from time to time (they spend the most time using formalin since they're in there every day). we've been in the safe range for a long time. i think a couple of female residents were wearing respirators when they were pregnant, just in case.
on another note: we have some people who use scalpels and those ultra sharp flexible blades (known fondly as "death blades") WITHOUT handles. Seriously???? i yell and scream when i see people doing this (i'm a former chief and i just can't help myself, safety first!)