I grew up with smoking parents. But god damn they were good at hiding that shit. it didnt affect me once so ever. i didnt even find out until i was like 13 and snooping in their room.
once i got to the age where i realized what things were, they put it completely out of sight. Actually i remember my dad rlling a joint when i was like...3. but thats it.
I know for a fact that they both quit, but it wasnt for parenting reasons. they just wanted to feel healthier.

so becuase of this, i will probably follow in the same footsteps. Keeping personal stashes here and there. Quitely smoking before bed as they did and passing out to wonderful dreams after a hard days work.