Examples from the Web for irrespirable
The term applied by miners to carbonic anhydride (carbonic acid) and other irrespirable gases and vapours evolved in mines.
Of or like azote, or containing it or formed from it; irrespirable; destructive to life.
The burning of sulphur produces sulphurous acid, which is an irrespirable gas.A Practical Physiology|Albert F. Blaisdell
Against the irrespirable air which at first enveloped it, vegetables were its saviours.The Bird|Jules Michelet