I too have gotten this from my pool. The symptoms I had were pressure in the ear, headache, dizyness and problems hearing from that ear. I went to the doctor and the ailment was physical not viral or bacterial. It turns out that in going under water, water and earwax became lodged in the ear and the trapped water was causing the pressure. The doctor just took a squeeze bulb of hot water and irregated the ear and when the "crap" came out all the symptoms were gone. I had this happen again yesterday, and just used to hot water irregation method myself to "Cure" the problem in about 5 minutes.