Head for the kitchen and the shower. Hot, spicy foods, hot broth, as well as tea and other hot drinks may make it easier to breathe. Also try taking a long, hot shower. Staying in air conditioning in both your car and home keeps the pollen out and reduces your chance of having an allergy attack. Go to the gym.
Exercise is a natural decongestant.
Check with your physician before starting an exercise program. This site intended for use by U.S. residents only.