I worked in a building like this. Over the year I worked in that office, my asthma got gradually worse and worse. I went from using my rescue inhaler maybe once every couple months (for minor cough/discomfort), to using it multiple times per day just to breathe. Inhaled steroids (Advair Diskus) were added to my asthma prescriptions. Eventually I could barely get through the day without prolonged fits of coughing and multiple asthma attacks.<p>Went to the doctor again, got diagnosed with bronchitis, sent home with prescription cough medicine and even more steroids (prednisone) and was told not to work for at least a week. Got better.<p>Started coughing again within 30 minutes of entering the building when I went back to work. Then put together that with the fact that I always felt a little better after my lunch breaks to realize it was the building itself making me sick.<p>We were getting ready to move to a larger office anyway, so got permission to work from home when necessary until the move. We moved offices, my coughing stopped. I discontinued all the steroids and now am back to using my rescue inhaler almost never.<p>I can't imagine the building had no effect on anyone else, but I definitely got the worst of it. No one else got sick the way I did.<p>The building itself was a historic building, a Firestone car repair place that had been retro-fitted to be an office. It was built in 1927, and then sat empty since the 1950s, until it was renovated in 2014.