In laboratories of various fields such as chemistry, biology, medicine, and materials, precision instruments, reagents and consumables, and experimental protocols are often the focus of attention. However, the seemingly ordinary fume hood is a core infrastructure for ensuring the safety of laboratory personnel, maintaining a stable experimental environment, and mitigating experimental risks. It is not an "optional equipment" for the laboratory, but rather the first and most important safety barrier against toxic and harmful gases, dust, and vapors. It can be said that the proper use of fume hoods is a bottom-line requirement for safe production in laboratories.