Two things struck me.
It's been about 3 years since the last time I have been sick, you kinda forget how crappy being sick is. I have been way too blithe when pals have told me they came down with typhus, dengue, measles or whatnot (really bad stuff).
Viruses are pretty smart. Cold viruses are all about mind control. They cause you to sneeze somehow and then find new hosts. Ingenious. I wonder how they do that?