As the server does not have a zombie first person, there should be some knock on the screen to show that you have become a zombie. (I know that when I become a zombie, life increases and you stay with the knife. would have no cost to the server) an example and the GUC server that when infected your screen turns red for a few seconds.
terror global Hi, we do have if you spawn as a zombie you’re screen turn into a black (playing as a zombie), if you are playing as a humain you can see the zombie spawn as green orbs, and the infection when you get infected your screen shake with a scream (it let you know that you become a zombie).