Catalytic converter changes toxic gases from a car's engine into safer, less harmful emissions before they leave the tailpipe. Universal Technical InstituteHow It WorksLocation: It sits on the underside of the vehicle, connected inside the exhaust system between the engine and the muffler.Design: Inside, it has a honeycomb-shaped ceramic structure coated in precious metals like platinum, palladium, and rhodium.Chemical Reactions: As hot exhaust gases pass over these metals, a reaction transforms the poisons without consuming the metals themselves. Reddit·r/explainlikeimfive +4The Gases It CleansCarbon Monoxide (CO): Oxidized into safer carbon dioxide (CO2).Hydrocarbons (Unburned Fuel): Oxidized into carbon dioxide and water vapor (H2O).Nitrogen Oxides (\[NO_{x}\]): Reduced into harmless nitrogen (N) and oxygen (O2) gases.