Bribing DD1 not to smoke

[Sazisi]

DH started smoking when he was about 11 , I started when I was about 13. Neither of us smoke now and it's really the only thing we regret doing. I hate the idea of the kids smoking..

We've told DD1 if she hasn't smoked by the time she's 21 she gets a grand.

It's an idea stolen and slightly adapted from a friend, who has promised the same to her son only including no drinking (DH would like to go the whole hog, I'm not sure avoiding alcohol until 21 is realistic?)

DD1 thinks it's a good idea, being a money-mad 10 year-old.
I know it's a bit something , but I know how strong peer pressure can be, and a financial incentive seems like possibly the only thing that might trump it..(I know seeing pictures of charred lungs etc ought to, but didn't seem to discourage me much)

I'd love to know your thoughts?

Also what about alcohol? I'd like to have a realistic (but slightly optimistic ) household policy on alcohol but a bit confused..

Just as another view - might your daughter see that you've decided she needs a big bribe to not start smoking, therefore smoking is something you need a financial incentive not to do, therefore as soon as the deal is done at 21 it's "Yay - now I have £1000 and I can start smoking without losing the chance at a cash reward! It must be cool/fun/etc if it was worth that much not to do it!"

How will you know she hasn't smoked by 21?

Smokers stink of it, don't they? In general.
I guess most people will have tried a few puffs by the age of 21, but it would be very hard to hide a regular habit.