👉 Transportation fumes refer to the pollutants emitted by vehicles, primarily from engines and exhaust systems, which release a mix of gases and particulates into the air. These emissions include carbon monoxide (CO), nitrogen oxides (NOx), volatile organic compounds (VOCs), particulate matter (PM), and greenhouse gases like carbon dioxide (CO2). Carbon monoxide is a colorless, odorless gas that can be deadly in high concentrations, while nitrogen oxides contribute to smog and acid rain. Particulate matter, especially fine particles (PM2.5), can penetrate deep into the lungs and bloodstream, causing respiratory and cardiovascular issues. These pollutants not only degrade air quality but also have significant health impacts on urban populations, contributing to smog, reducing visibility, and exacerbating climate change.