I dont smoke and I have never smoked.I dont drink coffee but I have drunk a couple of times( sorry I'm not a dude).Sometimes I feel my breath has the same shitty odor.I am 95% sure that the original smell comes from the butt,but some times my breath smells alike.
Although not examined by a doc I would say that my metabolism rate is hyper because I hardly ever gain weight(67Kgr) and i always feel tired.
I am white male 21.
If there is a serious study abou this shitty thing please tell us