After having redone the hardwood floors last fall. I think we got them done around mid Oct. There seems to be a smell that we can not get rid of. I was told the previous owner had redone the floors and used a type of poly that was a moisture sealer(or something like that)I know it was really hard to remove with the sander. I was just wondering if because we did not use that type we are getting some kind of smell from the wood. This is a old home built in 40's with a basement. The floors look good just can't seem to get rid of smell.

Well, I suspect that the previous owner meant " moisture-cure urethane", which is a stinky product at best, during use. I cant imagine sanding that off many years later would contribute to the odour you are experiencing. Could it be the new finish? Just lingering in a home with sensitive "smellers" lol. What kind of wood is it? What kind of finish?

I am not sure of the type of wood but this is an old home that was built by a company called National Homes which has been know in the past have put up a ton of homes fast. So I would say it was maybe pine? Can you tell me the reason the previous owner may have used the moisture-cure on it? It does have a basement that has a musty smell in the summertime. But we are using a dehumidifier to help with that issue. It has been about 7 months since we redid the floors.

You wouldn't happen to have some imported hand tufted rugs from India in there would you?

A relative of mine had a similar issue, but didn't have hardwood. She thought it was Chinese drywall, then mold but I tracked it down to the rugs. They used a funky latex to attach the backing that starts to smell, and its very stinky.

No the only rug is one we bought from Lowes for in the living room. We did buy a floor mat for it to sit on but we have one of those at another house and do not have a smell from it. I thought about the mold issue to but we redid all the drywall and had the foam insulation sprayed in before we redid the floors the smell came after doing the floors.

The previous owners probably used moisture-cure because it is an extremely strong and durable finish. But I don't think that would necessarily seal in any smell. Usually the wood smells good, especially pine.
Are you in a low lying area or are there any records of flood damage to the house? Sounds to me like your most likely source of smell is fungus or mold. I would focus my efforts in the basement.
By the way, how soon after you moved in did you refinish the floors?

Yeah, thats where my wifes aunt got hers. Smells like baby poop but only after a year or so and worse in higher humidity. Lift up the rug and smell it from the back side. The latex they use to apply the backing starts breaking down and smelling.

She had me cut a hole in the garage ceiling and go up there to check if it was chinese sheetrock. Then cut holes in suspect places where mold might grow. I kept telling her it was the rug but she was in de-nile or was that the Ganges.

Thanks for all this information. We redid the floors before we moved in. I did not notice the smell at first. I will see about removing the living room rug for a few days to see if that makes any difference, but the smell is all though the house. I do not see any mold in the basement as of right now. We do run a dehumidifier down there. When I was going over the floors yesterday I saw a few spots that were peeling just a small amount only like 2 spots is it possible for me to hand sand these and put a little more poly on those spots or should I wait until it gets worse. It has not been a complete year yet since they were done.

Once something starts peeling it usually gets worse. If you mess with those "peeled spots" yourself, you run the risk of a possible eyesore, and it's on you. I would call the company that did the refinish to repair that.

I am the one who did the floor. So I have no where to turn to but to see what my best options are. The spot is very tiny for now. I was just wondering what I should do