I turn into a very cross old lady in the supermarket when people sneeze or cough loudly and copiously with no recourse to handkerchief. They're generously showering us all with their germs. I usually wear a woolly scarf, and quickly slip it over my mouth and nose. I must look like a bank robber.
We're avoiding the Park-And-Ride bus for a week or two. It's a moving box of germs, and no-one wants the windows open. Again, people sneeze and snot without even covering their mouths. I get murderous about it!