The main thing is to release methane until the methane is almost exhausted.
If you mind the time, you can buy some pineapples and put one or two in each room, so that the smell of paint in the room will be absorbed quickly. Pineapple is a kind of crude fiber fruit, which can not only absorb the smell of paint, but also give off a delicate fragrance and speed up the removal of odor. There is a simpler way, that is, fill the pots and pans with cold water, then add a proper amount of vinegar and put it in a ventilated place indoors, and open the furniture door. This can not only protect the paint on the top of the wall from evaporation, but also eliminate the residual odor.