I have actually toured Beaver Stadium several times, earliest was as a Cub Scout.

I think everyone kind of braced themselves for some awful locker room sweat smell but it wasn't there.

Beaver stadium is pretty high tech, you might forget PSU is an agriculture school. The maintenance of the place is paramount. You you can probably look up how amazingly complex the irrigation and turf systems are.

Just saying that I do not think a lack of stench means a crime scene clean up.

EDIT: Jerk I lived in State College and both parents worked there and I had my first job at age 14 in a pharmacology lab there. Lived there from 1989 till 2004. Went to college there and even took classes there in high school.