I put some milk snakes in the room with my corns a couple of months back, and they all acted very "nervous" for a couple of weeks, whatever that means...
I just observed a more pensive mood, and moving around in ...aprehension, I guess, as opposed to a "hunting" cage cruise.
Just my observation, though. I have never been bit by my milks after handling corns, but I use the hand sanitizer gel when I switch species (at a minimum,) and depending on the apparent health of an individual, sometimes I use it between every specimen.
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Jeremy J. Anderson
Gem State Reptiles