The term "pneopneic reflex" refers to a respiratory response often triggered by the inhalation of cold or dry air. This reflex is commonly known as "air hunger reflex" or "hyperventilation reflex". It is an automatic mechanism that causes rapid and deep breathing, enabling increased oxygen intake. The primary purpose of this reflex is to protect the body from potential harm by ensuring sufficient oxygen supply during exposure to adverse environmental conditions. The synonyms "air hunger reflex" and "hyperventilation reflex" aptly capture the essence of this protective mechanism, emphasizing the urgent need for increased respiration to counterbalance inhospitable air quality.