I think we’ve all wanted to live in a tree house at one point.
In Ohio the weather is constantly changing it can go from a down pour to the sun shining and I understand how thick the air can get. So to keep cool I -put shirts in gallon bags and put them in the freezer over night and wear them the next day (life saver omg) -drink lots of water and snack on some ice -putting box fans in the window to suck the warm air out of ur house (depending on which way u put them) -need more oxygen in ur house so it's not stuffy? get aloe plants - fans !! everywhere !!