The World Health Organization (WHO) highlights the significant health risks associated with household air pollution, primarily resulting from the use of inefficient and polluting fuels and technologies for cooking, heating, and lighting. In 2020, approximately 2.1 billion people—about one-third of the global population—relied on open fires or inefficient stoves fueled by kerosene, biomass (such as wood, animal dung, and crop waste), and coal. This exposure led to an estimated 3.2 million deaths, including over 237,000 deaths of children under the age of five. The pollutants emitted from these sources contribute to a range of health issues, including respiratory infections, heart disease, stroke, chronic obstructive pulmonary disease, and lung cancer. The WHO emphasizes the urgent need for transitioning to cleaner fuels and technologies to mitigate these health risks.