YOU SAID:

there is a stench coming outside my backyard

INTO JAPANESE

裏庭の外から悪臭が漂ってきます

BACK INTO ENGLISH

There is a bad smell coming from outside the backyard

INTO JAPANESE

裏庭の外から異臭が漂ってきます

BACK INTO ENGLISH

There is a strange smell coming from the outside of the backyard

INTO JAPANESE

裏庭の外から異臭が漂ってきます

BACK INTO ENGLISH

There is a strange smell coming from the outside of the backyard