Something wrong with my breathing?

Why do you think your liver might have anything to do with your breathing???

I unconsciously breathe through my mouth a majority of the time too, because I have allergies. My nose is usually so stopped up or it is running so badly that I can't effectively breathe through my nose. Mouth-breathing is not as uncommon as you might think it is.

It does sometimes present a problem if I'm talking outside, and the wind is blowing hard and hitting me in the face. Of course, I have my mouth open while I'm talking and breathing, and the wind dries out my throat and then I begin to cough. A couple of sips of water usually solves that problem.

There is nothing wrong with the expulsion of air from nose or mouth.

We speak through our mouths after all.

Could be though you may have a nasal blockage/

Such as inflamed Adenoids.

It could be a partial blockage in your nasal cavity, it could be apnea.

See a doctor and lose weight.

For how to effectively lose weight, read "Fat Chance" by Dr. Robert Lustig, MD.

Its no respiratory disease. It is something like Sssniperwolf has. Go check her out about that very condition on youtube. She has the same experience as you do. Hope you feel better :D

You might have small nasal passages, maybe go to a doctor.