...do you not get insects and wasps coming in? And how do you put up with that?
I've never slept with windows open at night myself but on the occasions that they ARE open, most evenings will inevitably produce at least one angry wasp in the summer and other general midges, bugs and bluebottles (aarg!) are even more regular. Once when I forgot to shut my window at night, an enormous hornet came in and woke me by buzzing angrily around my face, the result was very stressful.
Do you have a can of RAID in your bedside drawer? 
EDIT, ok, apologies for the title error, (people not poop!)i don't know whether to laugh or cry!