here's the details:
1, the snake had been infected half a year

2, infrared bulb given to raise the temp

3, secretions are thick, sometimes clear and sometimes opaque

4, the check up results came out with no reaction with any bacteria and disease(i've did 3times) the first result came out with reaction, medicine given, uncured, second reslut, reacted with different kind of bacteria, the most extreme medicine given, uncured, third time, no reaction! vet said"if the medicine given are not helping, i don't have any clue what disease/bacteria it is!" he does mean the medicine at the third time check up

5, secretion continues to obtain, suggested to use betadine with warm water to clean out the mouth, no improevment

6, had tried many kinds of antibiotics that can heal upper respiratory disease, still no improvements and no reaction

NOTE: above information are listed not according to the date and steps, and this is not the first time the snakes got infected, we have 6 carpet pythons died of the same situation, it happens in winter eventhought we provide heat pad