Air

There was a room within which were people, and their numbers kept growing, not that it was a particularly big room; and while there was within this room two windows, these windows were never opened, and so, of course, this room became stuffy, unhealthy, gave off an ever viler odour, people got sick, choked on each other's fumes, fainted, lay about in useless heaps.
A stranger entered the room and without a word to anyone walked straight over and opened the windows- both of them! How did he dare? There was grumbling, even outrage, though not expressed with any great vigour. And anyway- no great surprise, inevitably- in flowed floods of fresh air. The colour started to return to their cheeks, a native hue one would have forgotten had been there in the first place. They even began to get up, move about, and, of all things, leave the room and go outside themselves.