PROBLEM TO BE SOLVED: To reliably recommend a fragrant content.SOLUTION: A fragrant content recommendation system (1) includes an information processor (4) connected through a network (3) to a content server (2). The information processor is provided with an olfactory display (10). The information processor displays a cartridge name input GUI on an audiovisual display (5), and a user uses the GUI to register a use state of a cartridge. The information processor stores a device information table (112) registered in the cartridge name input GUI. In logging in the content server, the information processor sends a device ID of the olfactory display and a cartridge-port number table (114). The content server recommends a fragrant content that can be reproduced on the olfactory display at that time by referring to the cartridge-port number table and informs the information processor of the fragrant content.