How might a near-future performer update the sideshow fire-eating act through the use of newer technology, materials, and scientific knowledge?
Everybody knows that if you take a mouthfull of kerosene and spray it out past an already-burning torch, you get fire breath.
But to achieve the wonder of stage magic, you would need to appear not to do that. Getting something into her mouth when the audience thinks it is empty could certainly be done with gimmicks or sleight-of-hand, but I’d still be interested in specific ideas.
More challenging is the subject of ignition. How can Fire Breathing Girl expell a flame when both hands are empty and held away from the face? That is, the audience will see that she did not just spit on an existing flame, but that this trick is mysterious.
I don’t expect worked out details like the trick designer would actually need — just a short exposition stating the nature of the technology.