👉 The term "unpropellent" refers to a substance that does not emit or release any propellant (fuel) when in contact with an object. This implies that the substance itself is inert, meaning it cannot be ignited by combustion. In physics and chemistry, propellants are substances that can be ignited by fire or other means. They are used in various applications such as aircraft engines, rockets, and explosives. Unpropellent substances are those that do not emit any propellant when
