I only ever crack my window an inch. With Alabama humidity, too much wind and the condensation will put my tobacco out.
When I drive rental cars while travelling, of course I smoke in them, but I will turn on the recirculation in the AC and spray some Ozium in the floor boards and let that circulate a bit just before returning the keys. Not one time out of 100's of car rentals or even nazi no-smoking hotel rooms has anyone ever said anything about smoke, NEVER!
I was asked one time, not to smoke in the pool, so I got out and finished my pipe in a chair.
I'm not sure why that is a rule, because the damn pool is the safest place to smoke.