Dark Perception

I like this idea. It'd be much quicker than typing, and you don't have to join some 'chat' room, when its a localized chat system. This could be useful in many ways, like quickly telling someone that your friendly and you mean no harm, or just communicating with your friends/fellow survivors. Quick/Simple/Handy.

Sorry for getting off topic. I don't know if this is already in the game, but maybe when you get sick you can give it to an NPC/survivor guy or if your on multiplayer to other players perhaps?

I do believe when consuming bleach the first step to do is drink Milk. I don't know why exactly, but I guess it helps. "In case of accidental ingestion, drink a glass of water or milk, and contact a poison control center."