Aim of the study: to estimate the influence of the defects and deformities in the intranasal septum on the main functions of the nose and therefore on the state of the upper respiratory tract and the ears. Methods: A total of 180 patients suffering deformation of the nasal septum were available for the examination. The study included the evaluation of breath characteristics, excretory and inspiratory functions of the nose compared with control with the use of the conventional methods including rhinometry. Results: The patients presenting with the defects and deformities in the intranasal septum were found to have nasal breathing problems, impaired sense of smell, disturbances of the excretory, inspiratory, air-transporting, and air-heating functions of the nose. Comparative analysis of laryngeal, pharyngeal, tracheal, bronchial, and pulmonary disorders has demonstrated the significant differences in the frequency and duration of these diseases and in the efficacy of their treatment between the patients of the study and control groups. It is concluded that the early recovery of nasal functions, in the first place the respiratory one, is an important precondition for the efficacious prevention of various catarrhal and other laryngeal diseases of the larynx, pharynx, trachea, bronchi, lungs, and ears.