Overusing oil on a really hot day or a really hot gun can result in hot oil spraying your face. Mr. WC NH experienced this when shooting with a friend of his. I watched him pick up his buddy’s gun, fire, and jerk his head back suddenly. He put the gun back down, took off his shooting glasses, and pulled the bottom of his tshirt up to his face. When he put his shirt back down I saw he had spatter burns where the gun oil had sprayed him.