How to get rid of smoking smell ?

[Odds]

Apologies if this has been asked before.

I purchased a car recently, and whilst I'm sure it wasn't there on the test drive, over time the smell of cigarette smoke has developed. Clearly the previous owner had a pretty heavy habit !

Any good suggestions on how to get rid of the smell ? Air freshners cover for a while, but it soon comes back.

[Odds]

Thanks all.

An onion sounds like a quick and easy fix, so will try that first

Any recommendations on products to clean the fabric seats, carpet and hard plastics ?