Don't know. It was give or take about 1989/1990.
I used to be a cigarette smoker, but would smoke cigars "sometimes".
A few years ago we found out an old friend we hadn't seen in 15 years lived only two hours away. The first time the wife and I go to see her and we're catching up I say "I quit smoking cigarettes a few years ago, but I smoke cigars now."
She looked at me and said "Now? You've always smoked cigars. Pretty much every memory I have of you is you smoking a cigar."
So... I guess I smoked a lot more through the 90's than I thought. Didn't really pay attention to what I was smoking and didn't keep much on hand.
The first thing I can say with absolute 100% conviction I know exactly what it was that I smoked was out of a box of Monte #2's I was gifted by a guy that wanted to do business with my company. That was the push down the slippery slope, for sure.