I felt more prepared partly because early in my career I worked on control systems for industrial sterilization. So got to deal with people whose job it was to make sure nothing was alive after a product was sterilized. Nothing is important here because one thing you find is there is a huge variation in how tough germs are[1]. If you know anything, when you read what kind of virus covid19 is you think detergent works pretty good. Or better let whatever dodgy thing sit over night.

After that it's yeah avoid sharing air with people, if you have to. Take a page from gay men. Assume people are infected. So wear a mask and keep it short. Short because all these things have a dose threshold.

I have to admit given the above the whole which and what activity is safe vs unsafe[2] drives me insane. Because pathogens don't care about playing tennis, going on a date, your sisters baby shower. They have a route of infection and they'll exploit it.

[1] Like HIV and Anthrax to name two extremes. The first can't survive outside the bodily fluids at all. And the other's spoors infect hapless cows in places where its been eradicated 50-100 years previous.

[2] Question you see bandied about by gay men. Oh you think that safe? Would you do that if you knew they were positive?