Operation For Dry Macular Is It True That You Can Tell Whether Or Not Your Dog Is Sick By Their Nose Being Wet Or Dry?

Is it true that you can tell whether or not your dog is sick by their nose being wet or dry? - operation for dry macular

My dog recently had a transaction for certain tumors and red ears, and is now even better! It is as if they back 2 years (She is now 10). Is it true that one can say whether the dogs sick from the humidity in the nose are? Because the nose dry before the surgery and is now a pile of damp environment. She is a fighter, if it helps!