I think I have seen a poison hazard in Pikmin 3 albeit unused and unfinished. An interesting fact about it is that White Pikmin are in fact unable to be poisoned, while the the other types are able to be poisoned and killed. The only thing that can produce this poison hazard is the Fire Geyser with the unused "gas" setting. The graphics also appear to be unfinished for both the geyser, and the effect. Feel free to check if you want to. (No, I don't mean ink or dust; I mean the real poison. Also, I am not the one who found this in the coding, so please don't give me any credit for discovering it.) — Mariotime315 Let's-a go! 
