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…showed last 75 words of 593 total…Avoid air travel, but if you must fly, take an oral decongestant beforehand and use a decongestant nasal spray two hours before landing. Avoid exposure to substances that can set off an allergy attack. If the person experiences an allergic reaction, he should use a prescription nasal spray or saline spray and one of the new nonsedating antihistamines (available only by prescription) to control symptoms. He should not smoke or go near anyone who does.