Personally I would not live in a house with ordinary laquer on floorboards, especially soon after having them done and while pregnant and with small children. We had our floors done when I was pg with our first child and DH refused to use anything but a "safe" product. we settled on a product called "Treatex" - it is some european all-natural hippy stuff (I think it is Danish, the Danes are very careful about chemical opollution) which is sold in australia by a company calle "whittle waxes" - it should come up on google. It is not as "tough" as regular laquer but it doesn't smell anywhere near as bad, and is better for you and the environment