I've taken public transport all my life and open doors and touch the same surfaces as others. It's quite common to see people standing on a train or bus sneeze into their hands and immediately grab a handle.

Same on an aircraft, those controls on the seat have been fiddled with by people carrying all sorts of germs.

I'm not that bothered being served by someone with a leaky nose, I've got enough imagination to know that it could be a lot worse in the kitchen. Someone with a leaky nose in June/July just means hayfever to me.

Although I don't seek out this experience it's not something that particularly distresses me. As far as I'm concerned, my immune system needs continuous training and exercise. I'm probably going to pick up something much worse going to the restaurant bathroom and smearing my cleaned hands with germs opening the door on the way back to my table.