When I was PG I could smell a cigarette about a 100 miles away. Barf! God they made me sick as hell!
I used to hate walking into the hospital for check ups cos of the smoking ban you'd have to walk past a line of smokers.
I think you are right to take a stand against the smoking family. What will you do when you have a LO though? Presumably you'd go visit...
My MIL smokes although she calls it "going for a wander" cos she thinks no-one knows.

We went to a baby resucitation class after ours were born and we were told that a smoker shouldn't hold a baby for at least an hour after having a cigarette because all the poisons and toxins were on their breath and then being breathed into your child. The thing I hate is when C or T tries to put her finger into their mouths.

Thankfully she doesn't let them do it.
Plus wasn't there a report in the news a while back about cot deaths and that something like 9 out of 10 cot deaths occured in smoking households or did I imagine that?