on strangers

Yesterday at around 7 in the evening, a strange thought came to me.
I had not opened the window in my room ever since i arrived. why? coz i didn't need to, they had the aircon. on, all the time.( !***ing global warmers!)

but then i did open it. A warm breeze came in (nothing philosophical about it coz it happens all the time due to the temperature and pressure differences inside and outside) and i realised i should have done this by now. Not that I could see anything new outside. But it felt strange i hadn't done that by now. All the air in my room till today had been from the vent up there on the wall. All sounds from outside were blocked. All smell had been a mix of socks , shoes, deo, books, furniture and myself.
While I was in a fix, my roommate passed by and said-"Dude! what are u upto? the ac's on!" I said sorry and shut it down.
it seems an open window is a strange thing for him.