Did Garrett Morgan make the gas mask?

Just as it is with Thomas Edison and the light bulb, Garrett Morgan was one of many that helped to shape and perfect today's gas mask. Morgan's device was patented as a "safety hood and smoke protector" and was designed to keep firefighters safe during risky rescue attempts. It had sponges in it that when moistened with water would filter out soot from the smoke in the air during a fire. It was never intended to keep the wearer safe from say a chemical or gas leak. Those masks came about a few years after Morgan's.