I worked at a Lebanese reception centre in the 90s before smoking was banned inside in Victoria (Australia). By the end of the night, there was a clear horizontal delineation of where the fresh air stopped and where the cigar smoke started.

Also, I remember ash trays every few metres or so in our local Target - mind blowing these days that you were allowed to walk around and essentially vandalise clothing and other wears with tar.

One other memory... there's an interview of someone from The Prodigy coming to Melbourne after the indoor smoking ban, and they were mind blown that when playing in a nightclub, there was zero cigarette smoke but instead the smell of baby powder