In France, Pilatre de Rozier, a chemist, conducted a dangerous experiment to demonstrate the flammability of hydrogen. By ingesting hydrogen and then exhaling it over an open flame, he effectively showcased the explosive properties of the gas. His bold actions had immediate and dramatic consequences, as they confirmed the volatile nature of hydrogen while also endangering his own safety.

This event serves as a cautionary tale about the risks associated with scientific exploration. It highlights how the pursuit of knowledge can sometimes lead to perilous outcomes, drawing attention to the fine line between curiosity and reckless experimentation.