Hondas generally do fog up more than other cars. Not sure if it has anything to do with how tight the interior is when the doors are closed and windows up. I remember my dad's 1987 Accord LX-i did the same thing, my Prelude does as well, and I wondered why when my Mom's 1985 Buick Regal never did......
BUT, Honda also has the best defogging ventilation system on the market as well. When it gets foggy, I just push the defog buttons (front and rear, A/C engages automatically), fan all the way up on high (#4), and adjust the temp for my comfort.... in about 2 minutes or less, every window in the car is completely fog free. Then I turn the fan down to low to keep it on the rest of my trip.