It appears you do not know the important role of oxygen. You see, oxygen is needed for our cells to func, cells turn oxygen into energy via the process of cellular respiration. During this process, Co2 is released as a waste product, you get it out of your body when you breathe out. Your body will not breathe in Co2 no matter what. So unless you like suffocating, think again about "eating that shit up". you don't breathe out oxygen, you only breathe out Co2, and only breathe in oxygen (in best case scenarios)
(Also "oxigen" should be "oxygen", random "n", "knw" should be "know", and "thats" should be "that's")