YOU SAID:

I know some humans who smell their own farts.

INTO JAPANESE

自分のオナラの匂いを嗅ぐ人を何人か知っています。

BACK INTO ENGLISH

I know several people who smell their own farts.

INTO JAPANESE

自分のオナラの匂いを嗅いでいる人を何人か知っています。

BACK INTO ENGLISH

I know several people who smell their own farts.