Gas van Gas van A gas van or gas wagon ( ("dushegubka"); ) was a vehicle reequipped as a mobile gas chamber. The vehicle had an air-tight compartment for the murdered victims, into which exhaust fumes were transmitted while the engine was running. The murdered victims were gassed with carbon monoxide, resulting in death by carbon monoxide poisoning and suffocation. The gas van was used by the Soviet secret police in 1930s. During World War II Nazi Germany used gas vans on a large scale as an extermination method to murder inmates of asylums, Romani people, Jews, and prisoners in occupied Poland,
Exhaust hood cooking fumes, which is then drawn out by the hood. In most exhaust hoods, a filtration system removes grease (the grease trap) and other particles. Although many vent hoods exhaust air to the outside, some recirculate the air to the kitchen. In a recirculating system, filters may be used to remove odors in addition to the grease. The device is known as an extractor hood in the UK, as a range hood in the United States, and as a rangehood in Australia. It is also called a kitchen, stove, exhaust, cooker, vent, or ventilation hood. Other names include cooking canopy,