I worked at an insurance company for over 5 years. Reading medical records was part of the job and lots of my coworkers had prior work experience in the medical field. One of my teammates has been in EMS.

And these people were shockingly oblivious to the health impacts of their immediate environment.

I cleared out old papers from an empty cubicle next to mine because it was exacerbating my respiratory issues. The person whose cubicle was on the other side of that cubicle had been to see a doctor three times for some infection. After I removed the papers, their infection finally cleared up. They seemed to see zero connection between the two things.

On another occasion, work crews came in to do work in an underutilized section covered in dust. My team was right next to all this and one of my coworkers was coughing all day, obviously in reaction.

I said something sympathetic and she said "Oh, I guess that could be why I'm coughing. It hadn't occurred to me they might be related."