Continuous positive airway pressure (CPAP) machines are used to maintain an open airway in patients diagnosed with obstructive sleep apnea. The machine functions by blowing pressurized air into the airway via mask at a setting determined by sleep study and prescribed by a physician.
Also the second largest impact structure on Earth, the 1.85 billion years old Sudbury crater in Canada, hosts world-class mineral deposits - in this case nickel-rich minerals that were melted and concentrated by the extreme heating caused by the impact.
Again, that might depend on exactly where the rock lands. We know that the Earth has been hit by some very large asteroids that have barely registered as life destroyers. The Manicouagan crater in Canada - one of the largest impact craters on the planet - was created in a destructive impact about 215 million years ago.