Nanny0gg - He is an adult who most probably knows all the risks and is choosing to ignore them. You can lead a horse to water and all that.
He is an adult who has had a long battle with addiction and has just relapsed after a year of being smoke-free. I'm sure he does know the risks, we've all known the risks for a long time. If that actually helped there'd be no smokers left.
Of course the OP is aware of the risks to her father. I expect that she's also aware that no amount of talking will change his habits.
I would hope OP is fully aware of the risks to her father, given her past line of work. I would not expect someone who used to work for Stop Smoking Services to have such a fatalistic attitude but perhaps I'm wrong. Perhaps that's why SSS have such a massive problem engaging smokers.
Her first priority is her DC ...
Her DD has not been harmed by this incident. As I said above, the risk from THS is tiny, entirely theoretical and based on exposures many orders of magnitude greater than a few belongings in a room for a bit with a lit cigar (happy to post links but it will be tomorrow). So OP could, if she chose, move on to other priorities. Not to do so, and to focus solely on your DC's wellbeing even when they're fine is, IMO, a good definition of PFB.
... and your posts are unnecessarily harsh.
The facts are harsh and I wish it was unneccessary to state them.
- half of all long-term smokers die early from the effects of smoking. This amounts to ~ 1/10 of the entire population of the UK.
- Smokers who die early lose on average a decade of life.
- For every smoker who dies there are 20 more living with tobacco-related disease.
I think it's entirely necessary to state these facts because people, especially women who are PG or have young DC, are bombarded with scary news stories all the time about health risks to themselves and their DC but the scale and likelihood of the risk is never put into context. This causes people (esp. mothers) to become pointlessly anxious about a whole host of tiny risks they can't reasonably avoid. That does nobody any good. THS falls into this category. Nobody has ever been documented as coming to harm because of third-hand smoke and in a situation where THS might become a concievable problem, second-hand smoke would already be causing far more harm. Meanwhile, OP's dad has at least a 50% chance of dying prematurely (I say 'at least' because he first packed in smoking because his health was suffering).
The extent to which grandparents' relationships with their GC matter will vary from family to family. Only OP knows how important it is to her and her DD that her dad is around for a good while longer. Maybe it's not important.