YOU SAID:

I don't like old people smell

INTO JAPANESE

古い人のにおいが好きじゃないです。

BACK INTO ENGLISH

I don't like the smell of old people.

INTO JAPANESE

私は臭いのような昔の人します。

BACK INTO ENGLISH

I smell like old people.

INTO JAPANESE

老人のような臭いがします。

BACK INTO ENGLISH

It smells like an old man.

INTO JAPANESE

それは、老人のようなにおいがします。

BACK INTO ENGLISH

It smells like an old man.