Never had hay fever in my life Steve, but now you mention it you have reminded me that whilst living in Dumaguete I suffered with hay fever type symptoms most days for a few hours. When we flew back to England the symptoms disappeared after only a couple of hours flying never to return since, never did know what coursed it, I just assumed it was traffic or aircon pollution when in town or shopping malls because I never used aircon in our apartment because it can course health problems!