And the best answer was "Black Widow spiders". Boxes and drawers that remain closed for long periods of time at the lab tend to collect them.
UC rules don't let us work on classified projects unless we are working at one of the national labs, so there's not much danger of finding a classified document at SSL unless a President or Vice President visits. They would never be allowed in my office because it is to dangerous for human habitation.
Deadly viruses usually require a living host, and my office has been remarkably rodent free since the start of COVID-19.
And Angela will never find out I posted that picture... Right?... Right?