add a zombification chem to the traitor poison bottle pool

[Frank_Stein]

It's a bloodlust. They need to eat regularly to live, and can become murderous if unfed.

I'm not saying it's the easiest solution, it's just a little RP built into the the concept.

Tbh I'd rather have them always be antags and the disease not be transferable rather than they aren't, because what's the point of zombies that never eat people?