The smell of baking bread, flowers or even dare we say it, a Guinness fart is something most of us have encountered in our lives.
But for Pete O'Toole in Kildare, he has no concept of what that means.
Since he can remember, Pete has had no sense of smell whether it's a good or bad smell.
Pete joined Dermot and Dave to explain how it has impacted on his life and what the first thing he'd like to smell would be.
You can catch the full chat by clicking play below: