Fact or fiction

Yesterday, a teacher told us that one's sense of smell is closely related to that of the memories. In other words, if you smell sth and peg it to a certain event, the next time you smell that same scent/stench, you'll recollect those events again.

Now! I shall add on that songs also trigger memories. Well, there are some songs which I 'lock' memories in them. hahahaha! they sound like a bank or sth... awy! oh well!