My mom puts a fan in her bedroom window and turns it out not in so it will draw the air through from the window in the bedroom across the hall.
But my DH was in Viet Nam and has to have all the windows closed and locked and covered! So no open windows ever!
I used to go around and open the curtains during the day and he would go behind me closing them. I finally gave in. I do open the curtains in the living room some days and he has learned to deal with it if it isn't for all day.
So a fan in the bedroom is a must!!