Gaseous pollutants and hazardous chemicals are major concerns in health care waste management because health facilities generate a variety of emissions during treatment, storage, transportation, and disposal of biomedical waste. These pollutants originate from incineration processes, chemical disinfection, pharmaceutical disposal, sterilization units, laboratory activities, and accidental releases of volatile substances. Common gaseous pollutants include carbon monoxide, carbon dioxide, nitrogen oxides, sulfur dioxide, hydrogen chloride, dioxins, furans, particulate matter, and volatile organic compounds. Chemical pollutants include disinfectants such as formaldehyde and glutaraldehyde, solvents, heavy metals like mercury, cytotoxic drugs, anesthetic gases, and sterilizing agents like ethylene oxide. Understanding their nature and health impacts is essential for designing safe waste management systems, selecting appropriate technologies, and training health workers effectively. Incineration of biomedical waste is a major source of gaseous pollutants when performed without adequate emission control systems. Burning plastics, pathological waste, and chemical residues releases toxic gases such as dioxins and furans, which are persistent organic pollutants known for their carcinogenic and endocrine-disrupting properties. Inhalation of these substances can lead to long-term health effects including cancer, immune suppression, reproductive disorders, and developmental abnormalities in children. Nitrogen oxides and sulfur dioxide contribute to respiratory diseases such as asthma, bronchitis, and chronic obstructive pulmonary disease, especially among waste handlers and communities living near poorly managed incineration sites. Carbon monoxide is a colorless, odorless gas produced by incomplete combustion of