Chellbot's going to be trying her damnedest to avoid quarantine (she may be flashing back to all those times GLaDOS and Wheatley tried to kill her...) If someone wants to bump into crazybot here and get infected that way, I can roll with it.

Also just for clarification- something that's been contaminated can infect people, but things that thing touches don't become toxic too? It'd be kind of impossible to contain if it kept starting chain reactions :|a