The present invention provides an odor generator capable of providing a wide range of odors including the odor of a low volatile fragrance ingredient. The odor generator comprises a plurality of electroosmotic flow pumps, each of which typically includes a storage section for storing a liquid containing a volatile fragrance ingredient, and an outlet section having a porous material arranged for discharging the stored liquid through the porous material when a voltage is applied to the porous material and a surface acoustic wave (SAW) or other element for atomizing or vaporizing the liquid discharged from the outlet section.
