I spray everything in my house possible with Euculyptus oil. I used to use an oil burner, but then I discovered that you can buy that stuff in a spray can. It doesn't have a miracle cure type effect but it does help dry all the snot out.

My house has not been the same since, I also use this for cleaning, bug bites, deoderising the house AND annoying my partner so he gets up in the morning. Most useful thing I have every bought.