PROBLEM TO BE SOLVED: To provide a portable aroma generation system that is easily carried around and allows a large number of persons to smell scent corresponding to a movie scene or game contents anytime and anywhere by the generation of a subtle aroma.SOLUTION: A portable aroma generation system includes: multiple portable aroma generators 1 having aroma cartridges with multiple kinds of flavors sealed therein and selective control means for selectively generating an aroma from a specified flavor in the aroma cartridges and control means 12, 13 for collectively controlling the selective control in the multiple portable aroma generators 1. Thus, the system is easily carried around without requiring the preparation of enormous kinds of odor elements or aromatic substances. Besides, subtle aromas are easily and economically generated anytime and anywhere in the neighborhood of a user, and a large number of persons can instantaneously smell an aroma corresponding to a movie scene or game contents.