There's a vaping haze lingering in the air. It is a thin band of vapor that has leveled itself out right about midway between floor and ceiling. It is undulating very slowly and not dissipating very fast. It's been there for about 5 minutes. I'm witholding vaping until it goes away, just to see how long it will be there. I've never noticed this before. It's probably a combination of the way the light of the low sun is coming through the window, and the fact that there is no movement in the room (except for my fingers on the keyboard).
OR MAYBE IT'S A GHOST! (just kidding)
OR MAYBE IT'S A GHOST! (just kidding)