Noxious gas

Noxious gases are harmful substances in the air that can cause health problems or environmental damage. They include chemicals like carbon monoxide, sulfur dioxide, and nitrogen oxides, which may be produced by combustion, industrial processes, or natural events. These gases can irritate the respiratory system, reduce oxygen in the blood, or contribute to pollution and acid rain. Exposure levels and duration determine the severity of health effects. It's important to avoid or minimize exposure to noxious gases to protect human health and the environment. Proper ventilation, pollution control, and safety measures help reduce their risks.