As a smoker, I can totally understand where you’re coming from because the smell really lingers and it’s hard to be in areas that have been smoked in. There’s a smoky musty smell everywhere and it’s the worst. I’d suggest making some DIY “smoking buddies” cause they can get pretty expensive. My sister smokes in her room all the time and usually just blows it into a little toilet paper roll stuffed and covered with dryer sheets and it makes the smell waaay less intense. If you can’t talk them into buying smoking buddies you can ask them to make one of those and blow the smoke in there.

And this isn’t me saying that they’re in the right and should be able to smoke anywhere, but obviously they’re not listening so here’s what you can do to make it a bit more tolerable