I'm afraid of cockroaches. Everything else is fine. I'm actually an entomologist assistant.
Something odd? Open doors. Can't handle them. I have to close all the doors in a house I see. I'm able to not do it in other people's houses, but it's stressful all the same. Also, if I close a door, I have to check if there are any doors behind that which are open.
This originates from the strange assurance that a serial killer will have to open that door, which would give me time to at least stand up or something.
I obsessively clean my Xbox and my laptop because they're both white. I've been known to make someone feel like crap about themselves by insinuating that they're filthy and need to clean their hands before they touch my controller. Sometimes I'll take paper, swabs, and other stuff and clean my controllers with them to make sure there isn't a speck of dust. Can never get it out of the corners of the back button thought, dammit.
I'm also terrified of the dark, but that's not really weird.
And something someone else said too! I can't clean if someone else is there!