My parents smoke and every single one of my aunties, uncles and cousins smoke. I grew up in a house where my parents smoked inside constantly and I thought that was normal.
My parents used to give us kids $5 and send us down to the corner store to grab their ciggies for them! I remember they used to smoke in the car and wherever we were like at the dinner table, watching tele, wherever. Obviously a long time ago now cos smokes are a heap more expensive than $5, lol. But, it's interesting in that all 3 of their eldest kids who my parents smoked heavily in front of, have or still do smoke and my one sibling who is a lot younger than the rest of us who never saw mum and dad smoke would never dream of even having an experimental puff! How times have changed.