For germaphobes. If you have people at a party, the higher likelihood one will be.

I'm old; I ate dirt, swam in lakes and drank from a garden hose! My immune system is superman.

Huh. Wild. I'm unaware that I have ever even associated with anyone even close to that level of germaphobe.

People that are that level of germaphobe tend to avoid people that are obviously the opposite way. It’s easier than explaining and getting them to do it your way (because there’s no meeting in the middle in these scenarios, it’s either clean enough, or it’s not)