I regularly experience a much more benign "haunting". Our cat sleeps on my wife''s bed down the hall from my "snoring room". Yet almost every night I can hear the cat jumping up onto my bed and feel its footsteps on my blanket. sometimes those footsteps are within a few inches of my face. But when I open my eyes, the cat is nowhere to be found. There's nothing objectively physical, like the open door in your example. But I can feel and hear the cat--until I open my eyes and see nothing. There's not enough time for the cat to have bounded away, and I would have heard that in any case. Obviously this is an hallucination in some sense, but why do I have this particular hallucination night after night? Is this the ghost of a cat owned by the house's previous residents? Is our cat psychically projecting herself into my snoring room, so she can be with both of us? Do I have a subconscious need to have the cat with me, which creates this fantasy? I have no idea of any plausible explanation for this.