Eating only pizza & junk food can make you smell bad?

all my roomate eats is pizza, junkfood, beer, takeout. about a month ago a stench like a dirty hippie started coming from his room. I can smell it on his clothes, and one morning I had to wake him up and the whole room reeked worse than ever. He is oblivious to this smell. But I'm sure it is coming from him because he wanted me to smell some fabreeze, so he sprayed a little on his hand and let me smell it. Well I smelled his hend and I smelled dirty hippie mixed with fabreeze. He showers daily and washes his clothes. he smokes about a pack a day of menthols, I'm sure part of the stench is lingering from that. But I'm wondering if such a bad diet is causing his body to make a dirty hippie odor?
I've been polite about it so far, but I don't know what else it can be
I've been polite about it so far, but I don't know what else it can be
