Why the "but cigarettes"? Is it harder than the other substances to shake, or are you more interested in maintaining consumption? Really curious. My dad's smoked cigars for nearly 60 years, and he's never been able to quit.
From talking to people who have been long term quitters, the urge to smoke never leaves.
My dad told me about smokers in the B-17s in WW2. They'd fly at 35,000 feet in unpressurized airplanes. There wasn't enough oxygen to keep the cigarette lit. So what they'd do is take a breath from the oxygen mask, blow it on the cigarette, whereby it would burn like a torch. Then they'd take a puff. The cigarette would begin to sputter and die, whereupon they'd take another breath from the oxygen mask, and the dance would repeat.
After the war, things were pretty bad in Germany. People would follow GIs around, and when they were done with a cigarette, they'd flick away the butt. People would rush to grab the butt, from which they'd harvest a few grains of tobacco. Eventually, they'd get enough to roll into a new cigarette, and sell it.
