In the summer of 1944 the Germans were attacked in France with napalm carried by P-47s. Napalm is not really just "jellied gas" but a combination of gasoline and aluminium soap that makes it stick to whatever it touches. The substance was analyzed by the SS and a factory near Berlin started to make dispersal bombs using a similar substance called Petrolin 5. Several Fw-190 test aircraft used the experimentals on Russian troops moving westward towards Berlin in the final days. Not much is known about it, but the effects were the same as IS-2 and T-34/85 tanks were hit as well as infantry. The experiments were short-lived, however, as the factory was captured by the Red Army. Postwar, not much development b/c the Reds captured a better German weapon- a thermobaric type and decided to go that direction.