Mysterious Grease

Lately I've noticed every observation window on each of the environmental chambers has been completely fouled up by some kind of weird greasy gray colored filmy funk. It's become so thick on the glass that it's very difficult if not impossible to see anything inside a chamber, even with the chamber's internal lights turned on which happen to be quite bright. I grabbed a straight edged razor blade and dragged it across the glass of one chamber's window. A lump of greasy slime collected along the razor's edge. Nasty.

Throughout my shift at night I'm constantly peeking through those chamber windows to check on instruments and verify cable hookups. Or I am making sure sensor connections have been made properly. With that unknown greasy crap covering the plate glass on all our chambers It's been annoying trying to see anything. One night about three weeks ago I grabbed a spray bottle of Lab Clean and a full box of those blue colored paper Shop Towels. Like a madman I drenched all the observation windows with Lab Clean and scrubbed the shit out of them until they were spotless. Much better. Turning any chamber light on after that I could see clearly inside for a change.

Not more than two or three days later the mysterious greasy substance was back with a vengeance. Walking through both the E-Lab and our chamber area I discovered every single window had been contaminated again. What the fuck? I have been puzzled as to where the source of this filth is coming from. Approximately every three days or so I break out the Lab Clean and go to town on all the glass again. Then the grease reappears like black magic. Nobody that I've talked to about this seems to know anything about it or even noticed the grease until I pointed it out. I'm going into Gumshoe mode trying to solve the strange mystery now, but I really have no clue what's causing it to show up.