Hello, They installed new hardwood floors in the apartment 2 floors up from ours. The smell from the polyurethane (and sealant and whatever else they use) has been coming in from the bathroom (our bathroom windows are all connected by a skylight). It smelled on Thursday and Friday, very strongly in the bathroom, but seemed to have subsided in the evening. There was no smell on Saturday and today, Sunday, it smelled stronger than ever all over the house. All doors and windows are open and that seems to help but I m concerned about the health effects this may have on my kids, the 3 year old has had to go to the washroom in this smell and I also have 4 month old twins. Thanks for the advice