Working on IT, I see quite the spectrum. One of which was a guy who was socially lacking. He did his job ok, but in office, he didn't know how to interact with other people. He would bring his own pickles and put them in the fridge, and fish them out for a snack. Then he would get ice for his water, and go back to work. He missed a critical step of using a utensil or washing his hands, and it took a while for everyone to realize why the ice started tasting off.

Then we find that he didn't wash his hands thoroughly, and I got sick eating chips he had rummaged through earlier.

He did an ok job at his desk, but made other people uncomfortable because he couldn't pick up on enough social queues to prevent people from disliking him.

He was eventually let go for trying to fix a cable under the desk of the only girl in the office, on the day she wore a skirt. This was far and beyond extreme and I wouldn't expect most people, no matter where they fall in the spectrum, to behave this way. But the interviews are to try to suss that out. "Culture fit", I think they'd call it.