Have you smoked a cigarette recently (as in at least the past 10 years)?. This is absolutely what they do. I'm not sure what the exact flame out time is for any particular brand, but it's a real drag (ahem) for people who like to smoke slowly, as the first re-lit hit feels very harsh.

According to Wikipedia[1] fire-safe cigarettes are required in all 50 states as of 2011. It's been awhile since I've smoked but I remember me and my friends bitching about the fire safe paper many years before that. We also theorized that it was making the cig more harsh in general. Of course we never had any evidence of this.

I might be wrong about this, but it seems to me that simple paper + tobacco hand rolled cigs natural behavior would be to not flame out, or do so much more slowly. What's stopping it from continuing to burn?

1. https://en.wikipedia.org/wiki/Fire_safe_cigarette#United_Sta...