Respiratory diseases are among the most widespread health problems globally, and their prevalence is influenced by various environmental factors such as air pollution, dust, humidity, and exhaust gases. To address these challenges, smart environmental sensors have emerged as an innovative tool for monitoring air quality and detecting pollutants accurately and in real time, enabling early intervention and prevention of these diseases. A smart environmental sensor is a small device that uses artificial intelligence and the Internet of Things (IoT) technologies to detect pollutants and harmful substances in the air, such as fine particles (PM2.5 and PM10) and toxic gases like carbon monoxide and nitrogen dioxide, in addition to measuring humidity and temperature, which affect respiratory health. These devices continuously collect data and send it to analytical platforms, where the results can be displayed on smartphones or control panels in healthcare institutions. The use of these sensors helps reduce respiratory diseases in several ways, including individual prevention by alerting people with asthma or allergies when pollution levels rise, community support by enabling governments and municipalities to develop plans to reduce pollution sources, proactive healthcare by predicting seasonal spikes in respiratory conditions, and education and awareness through sharing environmental information with the public. The health and social impact of this technology is evident in lowering rates of asthma and chronic bronchitis, reducing healthcare costs associated with treating respiratory diseases, and improving quality of life by providing a safer and healthier environment. Additionally, smart environmental sensors support the Sustainable Development Goals related to good health and well-being, as well as sustainable cities and communities. In summary, smart environmental sensors represent an important step in linking technology with public health. They help detect environmental risks early and provide accurate information to individuals and decision-makers, thereby reducing the burden of respiratory diseases and supporting the development of a healthier and more sustainable future. Al-Mustaqbal University – The Leading University in Iraq