YOU SAID:

my Boyfriend farts way to much and sometimes the smell is really bad

INTO JAPANESE

彼氏はおならをたくさんして、時々臭いが本当に悪い

BACK INTO ENGLISH

My boyfriend has a lot of fart and sometimes the smell is really bad

INTO JAPANESE

私のボーイフレンドはおならがたくさんあり、時々臭いが本当に悪いです

BACK INTO ENGLISH

My boyfriend has a lot of fart and sometimes the smell is really bad