YOU SAID:

So I should go outside and breath bad air?

INTO JAPANESE

じゃあ、外に出て悪い空気を吸ったほうがいいでしょうか？

BACK INTO ENGLISH

So why not go outside and get some bad air?

INTO JAPANESE

それなら、外に出て悪い空気を吸ってみませんか？

BACK INTO ENGLISH

So why not go outside and breathe some bad air?

INTO JAPANESE

それなら、外に出て悪い空気を吸ってみてはいかがでしょうか？

BACK INTO ENGLISH

So why not go outside and breathe some bad air?