Little rings of gunpowder in the paper to make it act like a fuse, that's nothing.

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.