I power washing my exterior deck that had dirt & mildew buildup. Following the work Saturday, I began experiencing athsma symptoms, deep chest cough & overall run down feeling that has now lasted 3 days. I had severe athsma thru my early twenties, but have not experienced an attack in 25+ years. Could this be due to disturbing the mildew and dirt with 8 hours of power washing? My cough and tight chest symptoms have not subsided since it began on Saturday night.