YOU SAID:

I ate tuna today and it smelled really bad.

INTO JAPANESE

今日マグロを食べたら、すごく臭かった。

BACK INTO ENGLISH

I ate tuna today and it smelled so good.

INTO JAPANESE

今日マグロを食べたら、とてもいい匂いがした。

BACK INTO ENGLISH

When I ate tuna today, it smelled very good.

INTO JAPANESE

今日マグロを食べたとき、とてもいい匂いがした。

BACK INTO ENGLISH

When I ate the tuna today, it smelled very good.

INTO JAPANESE

今日マグロを食べたとき、とてもいい匂いがした。

BACK INTO ENGLISH

When I ate the tuna today, it smelled very good.