The Fan

So roommate A and I entered our dorm room around 9:15 PM right, the lights were off, the room was cold, you know, how it usually is. Except something was different. There was a faint whirring near roommate A's bed. Upon walking over, we realized the fan was on and my mind immediately went to roommate A. She was the last one in the room, but when I asked her she told me she did not turn on the fan or go near it. (Plug in fan btw) I don't know if she's lying, but let's just assume she didn't turn it on. The door to the bathroom we share with suite mates was locked and the cleaning was done yesterday, so no one could have come in our rooms. Plus, everyone was downstairs partying anyways. After we checked the doors and closets in case anyone snuck in, there was a weird tug at the door and we both booked it out into the hall.

Roommate A later confessed to me she had heard knocking at the doors sometimes, and before this incident, she told me she has a ghost that follows her around. But, she doesn't think this was her ghost's doing because her ghost has never turned on a fan. There is a rumor that our hall and the hall above ours is haunted, and my friend was just telling me today how weird stuff happened in her dorm on the fourth floor too (books falling over, doors closing suddenly). I should also mention we were talking about paranormal stuff two nights ago (could we have invited some negative energy in the dorm?) and last night my shaving cream can began foaming randomly as if the top was broken. I don't know if this has anything to do with what just happened, but it's worth noting I think. Honestly, I'm not really scared because I don't feel any negative presences or have chills but who knows. We're also keeping this from Roommate B because she gets spooked easily:

Anyways, any insight would be amazing! This is @bearscary signing off...