I am very afraid of getting hit by opening doors.
Whenever I walk in hallways, I am always very alert, listening hard for the sound of a turning knob or shuffling feet on the other side of the door.
If a knob ever turns, I flinch away. This has saved me multiple times from potential death-by-door.
Recently, I have been visiting a new facility that has discovered a way to avoid death-by-door. Their doors are all set in alcoves so they wouldn’t hit people in the hallway. The same cannot be said of people in the alcove.
But I still flinch when the knob turns.