Almost every night, I push the button on my cpap machine to flush out the line a few times because I have this phobia that a spider (or bug of some sort) is hiding in the tubing and will crawl up my nose once the machine starts.
Now and then a hair or something fluffy will blow against my nose and totally freak me out. I have actually ripped my mask off my face in the middle of the night. One of the reasons I prefer not to use the full face mask. lol