Comment by DecoySalamander

There are so many possible scenarios. What if the campus is infested with face-huggers from the award-winning movie Alien? What if there are still Jewish students and faculty members who need to be harassed anonymously?

I'll leave those to people more familiar with the subject. And as for the pneumonia scenario, I reiterate that the only sane course of action is to seek treatment, not to walk around public spaces, masked or not.