The development of smart ventilator systems represents a significant advancement in medical technology, particularly in the field of critical care. These intelligent ventilators integrate cutting-edge technologies, data analytics, and artificial intelligence to enhance patient outcomes, optimize ventilation strategies, and improve overall patient care. This paper provides a comprehensive review of the current state of smart ventilator systems, including their components, functionalities, benefits, challenges, and future prospects. The discussion also covers the potential impact of these systems on healthcare and the advancements needed to unlock their full potential. The primary issue that a COVID-19- infected patient typically dealt with was the respiratory issue. It is to be hoped that the recent introduction of small-scale technologies such as microcontroller, ventilator, and Continuous Positive Airway Pressure (CPAP) will largely be employed to address the issue linked with medical equipments for breathing.