Poudre B Wikipedia
Poudre B was the first practical smokeless was perfected between 1882 and 1884 at "Laboratoire Central des Poudres et Salpêtres" in Paris, France. Originally called "Poudre V", from the name of the inventor, Paul Vieille, it was arbitrarily renamed "Poudre B" (short for poudre blanche white powder, as distinguished from black powder) to distract German espionage. "