they begin after 30min-2hours, very dry and sticky eyes, dry nose
almost bleeding, dry and sore throath, sore bronciali, difficult to breath, flu-like symptoms, funny feeling in the head like brains were not working properly, difficult to concentrate, weird cough. After 2 to 3 days when not in these buildings symptoms completely gone.
At first I thought it was mold which causes this. But I have been studying a lot about it and it is not mold. It is an air conditioning.