I put a set of outlets on an outside wall with a pigtail that runs to where the generator gets to sit when in use. I am still using extension cords but the house is closed and the pellet stove is close enough to directly plug into one of the outlets. I got tired of cords running through open windows.You'll be fine. The problem comes when people put them in enclosed areas. I wouldn't worry about it unless it was right under your window with no air movement and the window open.
Rule of thumb is 20feet from an open window. That being very very conservative
I'm about to buy my transfer switch and cord now before hurricane season so I can run my home and not worry about extension cords anymore. Thats my weak spot right now everything else I'm pretty much good with