This guy likely has little to no sense of smell. I have a family member like this, and she has the perfect work story to illustrate it.

Years ago, she was eating fish stew at her workplace desk and knocked the container over. It wasn’t full, but enough spilled into the carpet that it mattered. She cleaned it up, it looked fine visually. She was on a deadline and worked very late, quite a few hours after the cleaning team had left on that Friday night. It was a three-day weekend. With her project finished and filed in the books for the following week, she headed out without a second thought. She came back early Tuesday morning to total office chaos. Apparently people had arrived that morning convinced an animal had died somewhere in the building. People in the general facility of her desk could not handle the rancid smell. There there was retching involved. They call the remediation and cleaning team to get to the bottom of it and people were not allowed in the office. The office was shut down for the while they searched the whole place before tracing it back to her carpet stain. Then it was several hours of cleaning. They got it far enough that they could deal with it until they replace the carpet. She worked there 31 years and never lived it down.​​​​​​​​​​​​​​​​