@luckytran Those same signs are posted where I work: Prevent disease transmission! Wash your hands! It's not incorrect, but it's just theater.

Meanwhile the employee with a respiratory infection has their mask hanging off their face. People know. They understand. But this elaborate fiction is taking place within the group, and you have to go along with it if you want to be seen as a team player.

I had never seen this effect until Covid and I still don't get it.