one of my corns has one now...I found out because he was sneezing, and his nares (nostrils) were clogged. by the time I got him to the vet he was breathing with his mouth open. This is the second time this snake has had one...and I have many other snakes in my collection so I think that he might be particularly succeptable since none of the others has gotten sick. He is also one of the oldest snakes in my collection so that may have something to do with it too. Raising the temp in the enclosure can help fight it off if you catch it early. I've always gone to the vet and gotten antibiotics (Baytril) which is given in an injection every few days for a few weeks to a month. I thnk keeping the temp and humidity in the enclosure at optimum, and quarrantine any new animals, and you should be ok, although I changed nothing and my snake still got sick...so just keep an eye on them and take them to the vet quickly if you think they are sick.