Hah.. thank you so much for this one - Turn on the AC. Air conditioners remove mold-friendly moisture and filter allergens entering the house. Just make sure to clean or change the filters often or you'll just make things worse.
Now i have something to show the wife so she will let me have the AC on all night.. Woot
I heard that another is to eat honey from a local bee farm. The pollen that creates that type of honey (wildflower, clover, etc) helps your body get used to it. Might be an old wives tale or something but me and my girlfriend saw it help us.