YOU SAID:

Nellie eats nothing but onions, and it makes her breath smell horrible.

INTO JAPANESE

ネリーはタマネギしか食べませんが、息が恐ろしいにおいがします。

BACK INTO ENGLISH

Nelly eats only onions, but her breath smells dreadful.

INTO JAPANESE

ネリーはタマネギだけを食べるが、息は恐ろしいにおいがする。

BACK INTO ENGLISH

Nelly eats only onions, but her breath smells dreadful.