This is something I struggle with. My oldest daughter is 6 and taking interest into my hobbies, one of which is of course pipes. The other day she was asking to smell a couple tins I opened up and she liked the scents of them...She also enjoys watching my packing rituals and restoring estates.
On one hand it is a bonding experience, and something I feel she will always remember me by, but on the other hand I don't necessarily want my daughter interested in smoking...I was a slave to cigarettes for a long time and I would hate to see her go down that path, and to be honest I don't want her smoking a pipe either.
It's a hard one.