I was on Call Kaye, the BBC Radio Scotland phone-in this morning.
It was, ahem, a lively 30 minutes during which we discussed the BMA's call to ban smoking in all private vehicles.
My fellow guest was perky Miranda Watson, director of communications at the British Lung Foundation.
Towards the end of an occasionally heated discussion, presenter Kaye Adams admitted what I have known for many years. She is an anti-smoker.
Pity she didn't mention that at the beginning of the programme.