Are there any chemical experts online? I have questions about paint and solvents – it’s urgent!

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I feel embarrassed asking this here. But I really don’t know what to do anymore; Baidu simply can’t help with this. I hope there are kind people who understand this issue and can help me analyze it: The home renovation is already at the stage where solid wood floors are being laid. But a problem arose that left me at a loss: the painter accidentally poured thinner on the concrete floor, and due to work commitments, I was unable to supervise things during the day. We went to check out the new house at night, and when we entered we noticed a strong smell, which is why we called the painter. At that time, she said over the phone it was a thinner, but it had a strong smell. I have a bit of OCD; I wonder what would happen if he didn’t use a diluent after all And at that time, we had absolutely no idea about the amount he flipped or the exact location of those flips. . . . . . The thought that, once the wooden floor is installed, it will continue to emit toxic gases in the future fills me with fear. I searched on Baidu, and some people said that cement has strong permeability; washing it with water is useless unless it is ground away. Do we really have to polish all the cement in the bedroom? Now, that painter has gone back to his hometown and cannot be reached; it’s truly exhausting.