I am very much a windows open person, and will always open my bedroom window in all weathers, even if it's just for an hour to rid the room of that musty sleep smell.
I moved house last year, and I've noticed that very few people on my street have their windows open. My next door neighbour on one side occasionally has their bedroom window ajar in the warmer months. One neighbour across the road has started opening one small upstairs window recently. My other ndn never has her windows open. Another house also has their windows firmly shut and blinds constantly closed! I know they're in, as I can see them coming and going. They must just live in darkness constantly.
Meanwhile, I was sitting over the weekend with all windows thrown wide open, and my back door propped open until 8pm.
My neighbours must think I'm insane, but why would you not want a flow of fresh air through the house? Am I the abnormal one here?