Abstract: It is one object of the present invention to provide an air-intake actuated device adapted for delivering a substance to a nasal cavity of a subject, comprising: a. a container for containing said substance; b. a nosepiece extending from said device for placement in proximity to a nose of said subject. c. a valve mechanically connectable to said container, characterized by an ACTIVE CONFIGURATION and an INACTIVE CONFIGURATION; and, d. a trigger mechanism adapted to reconfigure said valve from said ACTIVE CONFIGURATION to said INACTIVE CONFIGURATION, and vice versa; wherein said trigger mechanism is activated by means of said subject intaking air through said mouthpiece; further wherein said trigger mechanism is adapted to reconfigure said valve from said INACTIVE CONFIGURATION to said ACTIVE CONFIGURATION for a predetermined period of time in response to said subject intake of air.