Hi I have been exposed to sewer at my work place (I am a school teacher) since my exposure which is long term but unknown until this year 2015, I have had sinus drip, Painful throat, headaches, enlarged papillae and now fluid of the lungs. I also have cobble-stoning at the back of the throat and difficulty breathing. I noticed discoloration on the sides of my tongue. I also have change of voice. Currently on sick leave.