DH comes from a family with a slightly odd dynamic in that whenever a topic is difficult it is never discussed. Sometimes you can hardly move in PILs house for all the elephants in the room. Anyway one of these is that MIL smokes. Not a lot, maybe 3 or 4 a day. But she does it in secret and no one ever mentions it.
They are coming to stay tonight to visit us and our child who they adore. When they come down MIL comes up with weak excuses to leave the house to smoke or smokes out of the bathroom window. I don't know if she thinks we can't smell it but in my experience smokers often underestimate the smell
Anyway, the key thing that bothers me is smoking in the bathroom. Fortunately we have a spare one so the baby isn't in there regularly but the smell still escapes. I would like to tell her that I know she smokes, hand her an ashtray and ask her to smoke on the patio. DH squirms at this suggestion and wants to ignore it. So would my approach be reasonable or should I leave it?