The workspace of a pianist is always densely packed with a large amount of wood and tools, or has a dedicated wood storage room.

So the question is, do you think entering a sealed environment with sufficient oxygen eliminates the risk of suffocation? In fact, entering a closed environment where wood is stored can also lead to oxygen deprivation and death. And it was only a short period of ten years before humans realized the ferocity of wood.

Before 2004, the hazards of wood were unknown and not fully studied. Researchers now know that even when wood is not burning, it can "revive" and consume oxygen. But unlike rust, wood not only absorbs oxygen, but also emits toxic gases such as carbon monoxide and formaldehyde, a phenomenon known as outgassing. In addition, after being exposed to moisture for a period of time, wood will also ferment and produce flammable gases.

The most dangerous wooden product among them is wood pellets. Wood pellets are biofuels made by compressing sawdust and sawdust. The International Maritime Organization's publication of the "International Code for Solid Bulk Cargo by Sea" classifies wood pellets as Class B cargo, which refers to goods with chemical hazards because they, like iron products, also oxidize, taking oxygen from the air and releasing carbon monoxide.