Just about every place I've worked had small individual bathrooms. Well, except for the first hospital, and that was way back when I was a teen. And maybe Scripps Clinic, but I can't now visualize that bathroom. (I still can visualize the dumb waiter thing that brought down the morning stool samples when I was doing my training in parasitology. That is, running the parasit lab.) Fortunately (or unfortunately) I have a poor sense of smell.
Individual bathrooms are pretty good for emotional respite or just plain old time to think or gather wits in some way. The time I remember, my boss and another colleague were having an intense fight (she soon stalked out quitting) and she was all mad at me too (trying to stay out of it) and I went to the small bathroom and cried for a couple of minutes in frustration. She wasn't talking to me for a month or two, not so bad since we were running our own projects, but heavy tension in the room. Years went by and we were pals again, and still are. Life is strange..