Methods for inhibiting the development of respiratory infections in humans are disclosed. One embodiment of the methods comprises pouring a predetermined amount of an oral rinse, capable of rendering ineffective a pathogen which has recently infected the respiratory tract, into the mouth of the human, agitating the oral rinse with air for a predetermined period in order to generate concentrated vapor of the oral rinse, stopping the agitating a plurality of times during which the head is tilted forward to allow the predetermined amount of an oral rinse to move away from the back of the mouth and throat, then exhaling before inhaling such that the concentrated vapor of the oral rinse is gently forced along with exhaled air from the throat thorough the nasopharynx and the nasal passages of the human, and then inhaling slowly to pass air over the oral rinse in the mouth such that concentrated vapor of the oral rinse is gently forced along with inhaled air through the larynx, over the vocal cords, and through the trachea to the lungs. The method is performed within about one hour after the human experiences the first minor symptom and before the onset of the first major symptom of infection of the respiratory tract.