I had that happen once on a coast-to-coast flight by a "lady" who looked exactly like that and I had a window seat and she had the middle. I saw her coming my way down the aisle and I just "knew"... and the flight was completely full.
It was the worst flight of my life and her strong perfume didn't help, either.
imagine the odors that perfume covered up.
Something that huge and sloppy likely does not have hygiene as an important habit.