Poisonous, but very small. Dawang Coco paint-free board itself has very little toxicity, is relatively stable, and will not release toxicity after curing. Whether paint-free boards for making furniture pollute the air depends on the medium-density board or particleboard base material used in the paint-free boards. If the formaldehyde release of the base material reaches environmental standards, paint-free boards will not aggravate material pollution. Paint-free boards will not aggravate material pollution. The board does not have any odor, and the odor is emitted by lower-quality medium-density boards, adhesives or additives used in coatings that contain formaldehyde and other substances. It is impossible to find boards that are completely free of formaldehyde, but the accumulation of various furniture can easily cause the formaldehyde in the renovated house to exceed the standard. Therefore, ventilation should be maintained for several months after renovation, and the harmful gases in the air must reach the national standard before moving in.