YOU SAID:

I went out for a walk and i smelled something...

INTO JAPANESE

散歩に出ると、私は何かをかいだ.

BACK INTO ENGLISH

Go out for a walk and I smelled something.

INTO JAPANESE

散歩に行くし、私は何かをかいだ。

BACK INTO ENGLISH

Go for a walk and then I smelled something.

INTO JAPANESE

散歩しにおいがした何かのために行きます。

BACK INTO ENGLISH

Go for something and walk, smell.

INTO JAPANESE

何かのために行くと歩いて、香り。

BACK INTO ENGLISH

Go for something and walk, smell.