My landlord is upstairs putting a new finish on hardwood floors. There is no ventalation and the fumes are horrid down here in my office (I'm at work and can't leave). How toxic are Polyurathane fumes? I'm 4 months pregnant. I'm scared there may be lasting effects from breathing this in. I have my door open but it's also 12 degrees outside and I'm afraid of getting sick too. Any advice?