I am an FAE that has to represent our company at various different locations. Last week, I had to do an installation with a customer where one employee was visibly very very sick (sneezing, coughing, noise dripping, etc), he even said he was here just to do the training then he was going to go home sick.
With my current schedule, I can't afford to get sick (nor do I want to), so I tried my best to avoid contact and made sure to avoid touching my mouth, etc. But at the end of the session as I was being walked out and was offered a hand to shake, I felt obligated to shake their hands...including the guy who was very sick.
What should I do in this situation? I've concluded that it's my job to be polite because I represent my company, even if it means shaking the hands of someone I don't want to at risk of my own infection. I'll note that when I am sick I always politely decline a handshake, but what do I do when the tables are flipped?
(Also, 1 week later I'm still not sick, so I'm in the clear!)