If it is in good faith then let me respond (albeit quite late). I've also learned "the hard way" how to behave around people who experience psychosis by taking care of multiple friends at various points in time. Some people get violent, some don't. Those that don't generally will almost never get violent -- their brain seemingly just "doesn't have that pattern", so when their consciousness is starting to hit random buttons, it doesn't often come up as an option. People that do get physical (or heavily paranoid) have the potential to go violent, and that must be kept in mind for your own safety. It's obviously a lot more muddy than that but it's something to know.

I also know a nurse in a psychiatric clinic (the harder kind), he gets bit so much they have special vaccines (?, or some other kind of medication) to protect him against illnesses that can come from a human's mouth.

I don't believe the above reactions that I have learned are trauma, it's just the rational way to act when you've seen literal examples of what can happen.