In the 1980s my wife and I were in the house when a smoke detector went off. It was in the garage. I opened the garage door, and the entire garage was filled with smoke. I went on a breath-hold into the garage, found a single 72 with a backpack, quickly placed a close-by single hose regulator on it and opened the valve, got a breath of air through it, found an oval mask and put it on, then stood up and looked around. Our second freezer (left over from the previous owners, was bellowing smoke from underneath it. It was an electrical fire, and I unplugged the freezer. Then I opened the garage door, came back and rolled the freezer out into the driveway as the fire department rolled up (Chris had been to the phone). The firemen said it was pretty funny to see the garage door up, smoke boil out the door, and a guy in a scuba tank and mask rolling a burning freezer out onto the driveway. Fortunately, there was no real damage, and the smoke dissipated quickly. But it goes to show that the scuba unit can be used in an emergency as a Self-Contained Breathing Apparatus (SCBA).
SeaRat