Housing: Can I open the window and get some ventilation?

John and Martha share an office. Martha likes to keep all of the windows close because she is afraid of cold, but John can't stand that.....


John: It's like an oven in here! You must be roasting!
Martha: Actually, I'm just comfortable.
John: You've got to be kidding me. It has to be over 95 degrees in here!
Martha: What can I say? I'm a cold-blooded person. The warmer, the better, as far as I'm concerned.
John: Well, can we at least open a window and get some ventilation in here?
Martha: Knock yourself out.
John: Thanks, I will.