In a move that integrates modern technology with patient comfort, a research team of students from the Biomedical Engineering Department at Al-Mustaqbal University successfully designed and implemented the "LEAF_CO2" project, a smart air quality monitoring device, under the supervision of Assistant Lecturer Zainab Sattar Jabbar. Project Idea and Objectives: The project, designed by students Duha Hakim Dakhel, Yahya Majid Muhi, Ali Karim Kadhim, and Fatima Ali Mahdi, aims to create an interactive system that monitors environmental conditions within hospital rooms, such as carbon dioxide (CO2) levels, humidity, and temperature, to ensure a healthy and safe environment for patients. Technical Innovation and Design: The device features a unique "leaf" design that functions as a smart visual indicator. The technical methodology relies on: • Using a microcontroller and advanced sensors to measure air parameters in real time. • Converting complex data into simple visual signals via RGB LED lighting that changes color based on ambient air quality. • Providing an easy-to-understand interface that requires no technical expertise from nursing staff or attendants to understand the health room's status. Results and Sustainable Development: The device has proven successful in providing accurate and interactive readings at a low cost, making it a practical solution for use in healthcare facilities. This innovation achieves key goals within the university's sustainability vision, namely: • Goal 3 (Good Health and Well-being): Improving the patient recovery environment. • Goal 4 (Quality Education): Applying engineering principles to community-based solutions. • Goal 9 (Industry and Innovation): Developing smart medical devices locally.