At one point tobacco companies developed non-addictive cigarettes and kept it a secret.
Source: A long time back a friend of mine's brother was part of a faux-jury assembled by tobacco company lawyers to do like a focus group to research how real juries in some real trial might think/feel. They revealed all kinds of stuff to these folks. They made them sign NDAs, of course, but he told us everything anyway. That was one of the things I remember: they made non-addictive cigs and kept it a secret.
There is no gunpowder in cigarettes:
https://www.verywellmind.com/big-tobaccos-list-of-599-cigare...
https://boards.straightdope.com/sdmb/showthread.php?t=27857
A non-addictive cigarette would have to have no nicotine b/c nicotine is addictive:
https://www.drugabuse.gov/publications/research-reports/toba...
"Source: A long time back a friend of mine's brother was part of a faux-jury assembled by tobacco company lawyers to do like a focus group to research how real juries in some real trial might think/feel."
Ycombinator post<--carapace<--friend<--brother<--faux-jury<--lawyers<--tobacco company
Even facts get changed when they're nested >5 levels deep in human networks.
I suspect it would not do well as a product, all the downsides of smoking without the rewarding nicotine buzz. It would be interesting to learn more.
A person is holding something flammable without the respect it deserves. The human desperation to place blame needs to be restrained better.
Note that I'm not saying here that they simply fail to use some technology or chemical that would cause a cigarette to burn out. They are doing the opposite; a hand-rolled cigarette burns out on its own.
Cigarette fires are usually caused when a smoker falls asleep while holding a cigarette.