What a great point! I had to laugh at that...I was the on-site boss of a $1.6B project and I was always the last to know what was going on because I too am not a smoker.
And, it used to really piss me off that smokers managed to get 10 to 15-minutes off every hour for a smoke.
I noticed that none of them ever volunteered to arrive at the office early or stay late to make up for goof-off smoke breaks during work hours.
Hell, I'd even fly for sodas if some else was buying on occasion.
15 minutes per hour is ridiculous!
My thoughts and observations, your mileage may vary.