Lateral Thinking

Every single morning or afternoon or evening in TRAIN,i will experience lots of different smell it's either body odours or FARTS.Yes,i was wondering what people eat till the smell is unbearable.I fart too but the question is how harmful is our fart?People would normally say,fart can cause you mental distraction and sometimes headache or cause of hatred to the farter.yes,it's true.But in terms of thinking laterally,i would say,fart's are hot air so it rises.Since we breathe from below,we could breathe in air no matter what because we need oxygen.So will we be able to breathe upwards and prolong the breathing of fartation?haha,no.