BS. we are not sponges that feed off of what we breath, nor do we synthesize food by photosynthesis.

the body is a amazing thing, we can get a little bit of hydration by breathing humid air and through our skin, you can also live months without food, however you are close to death that whole time and you have to drink alot of water and dont move around.
but there are things the body absolutly needs to survive but cannot make itself, it has to be eaten. the brain needs fat to live.