My corn snake has had an on going on and off respiratory infection for a while now, he has been treated with baytril twice but this hast kept it away. He has also stopped eating for a while now and keeps getting a brown scab over his nose. I've had him at the vets this week and I'm scheduled to have samples from his nostrils and lungs on Friday. I was just wondering if anyone has had any previous experience with anything similar? And also if anyone could tell me what the procedure he is having done entails, any risks etc? The vets still don't have a clue why he keeps getting these infections and scab, the temperature is around 30 and the humidity is 40%. Any help would be much appreciated as I am worried.