The question

There is a chemical smell in office as well as natural gas, There are no air moniters and despite over half the office going home ill the office is not doing anything to change the situation. This is been going on for a week and will continue for at least 30 more days. I go home with a headache, sorethroat and irrated eyes. What should I do, It has been reported to my Supervisor and the whole department was told to write reports. Still nothing being done. Going to my own doctor.