O.K. My childrens great grandmother (my mothers mother) is an extremely heavy smoker.
She refuses to go outside to smoke or even in the conservatory (too cold) when she visits my mother, and always ends up filling the house with smoke although she's been asked not to.
If anybody (other members of the extended family too) absolutely insists she smokes outside when she stays, she makes a fuss and says she's being made to feel unwelcome.
I've said I really don't want my children around smoke, and that if she wants to spend time with them - which would only probably happen a few times a year anyway - then she really must go outside for a fag. But she absolutely won't compromise, and so she doesn't really see my kids which I feel is a shame both for her and for them.
The thing is, I think my mother and her partner think IBU, and a bit self-righteous. Their attitude is 'come on she's an old lady who's smoked all her life, she can't NOT smoke, and it's not going to kill your kids to be around it only a few times a year.
Perhaps they're right and IABU. What do you think?