Decontaminate your decor. Minimize dust that may worsen nighttime symptoms by replacing certain items in your bedroom... Prevent mold spores. Clean damp areas in the bath, kitchen and around the house to keep mold spores from developing. Get rid of moldy leaves or damp firewood in the yard. Reduce pet dander. If you're allergic to dander, avoid pets with fur or feathers. . Cover your nose and mouth if it's cold out. Your doctor will suggest an alternate medication while if you are pregnant..