jimswims, I'm showing my age here, but I remember when
anyone could smoke
anywhere! Restaurants, grocery stores, drug stores, hotels, church, even outside in the back of our high school :eek:!
Like you, we've never had a "smoke" smell in our cabin. However, as soon as we can get into the cabin I open the balcony door to get the "clean ship" smell out. I find it overwhelming

.
I don't think it has anything to do with "luck" that you've not smelled smoke. I think that it's because it doesn't bother you that you don't notice it.