i am in the office and it's lunch time. sorry I canot type Chinese. I found that the other ones are not worry about the smell. My seat is near the door and I open it just for a little, the other ones complain me that it is too cold in the office. i have to closed it. They don't think this is a trouble to their health. I got an idea last night. I remember that when I am in China, once our office is decorate, we buy two "fa cai shu" in the office , both two died after one months. so today I put some flowers on my desk. If after a few days, the flower died , that means there is problems. If the flowers are OK, it is ok, because the flower stay more hours than me in the office. I am not sure my idea is working or not. Thanks for your reply.