I work for a Precast company as a drafter. I've been here for maybe 9 months now. I am constantly getting sick with colds and sinus infections. I work inside the office building, but the warehouse is right next door. I've been to a doctor who told me I have the allergy and gave me medications for it, but they aren't really helping. I still have a cough that won't go away as well as the other symptoms of allergies.