What can happen if you have incorrect humidity levels?

[Skiploder]

but it is believed that a snake kept in to dry of a condition can cause the lungs of that snake to become dryer then normal and can cause minute cracking in the lining of the lungs. These cracks can easily become infected and can lead to RI.

This is the first time I've heard this about the lining of the lungs cracking. Can you point me to some information so that I can read up on this?

Thanks in advance.