I am sure many non smokers can relate to the occasional revolting reflex while handling second hand purchase from smoker's home. Curtains, sofa, clothes or toys even (believe it or not) can smell really bad and not even good old 90degree wash can take the smell away. 

Perhaps you have moved in to the house where even the carpet smells like an ashtray?

We found one article from Washington Post that we wish to share, as it talks exactly about a situation, where ozone treatment appeared to be the only solution: