Ventilation hoods, also known as fume hoods or safety cabinets, are enclosed workspaces used in laboratories to control and remove potentially hazardous fumes, gases, vapors, and particles generated during experiments or procedures. These hoods help protect laboratory personnel, equipment, and the environment from exposure to harmful substances by providing a barrier between the user and the hazardous materials. Ventilation hoods are essential for ensuring laboratory safety and compliance with health and safety regulations.