Worst allergy cities in the United States
3. Knoxville, Tenn.
Credit: Getty Images
KNOXVILLE, TN - OCTOBER 06: A general view of the Tennessee Volunteers taking the field before the start of their game against the Georgia Bulldogs at Neyland Stadium on October 6, 2007 in Knoxville, Tennessee. (Photo by Streeter Lecka/Getty Images)
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