YOU SAID:

never eat something that someone else has smacked with a fish

INTO JAPANESE

誰かが魚をたたいたものを決して食べない

BACK INTO ENGLISH

Someone never eats a fish

INTO JAPANESE

誰かが魚を食べない

BACK INTO ENGLISH

Someone does not eat fish

INTO JAPANESE

誰かが魚を食べない

BACK INTO ENGLISH

Someone does not eat fish