Commonly Known:
* Carbon Monoxide (CO): A product of incomplete combustion, often found in vehicle exhaust. It's highly poisonous as it binds to hemoglobin in the blood, preventing oxygen transport.
* Hydrogen Cyanide (HCN): Also known as prussic acid, used in some industrial processes but is extremely toxic.
* Chlorine (Cl₂): Used in water purification and as a chemical reagent. It can be highly irritating and toxic in high concentrations.
* Ammonia (NH₃): Used in fertilizers and as a refrigerant, but can be dangerous at high concentrations.
Less Common but Still Dangerous:
* Sulfur Dioxide (SO₂): A byproduct of burning fossil fuels, can cause respiratory problems.
* Phosgene (COCl₂): A chemical warfare agent and industrial chemical, highly poisonous.
* Nitrogen Dioxide (NO₂): A component of smog, can irritate the lungs.
* Ozone (O₃): A component of smog, can damage the lungs.
It's important to remember that any colorless gas should be treated with caution. If you suspect a gas leak, evacuate the area immediately and call for professional help.
