Steroid nasal sprays can cause nosebleeds and, in rare cases, a change in your sense of smell. If you experience these side effects, you may want to ask your doctor about an alternative.

Steroid nasal sprays. If you've got congestion or postnasal drip, steroid nasal sprays like Flonase, Nasacort and Nasonex can help. But you probably shouldn't be taking them year-round, says Rubin.

With pollen season starting earlier, "you may need to start your intranasal steroid spray earlier than you used to," so it'll be optimally effective. Nasal decongestants. If you're really stuffed up ...