Odor evaluation device, odor evaluation method and device for preparing gas for odor evaluation

A device for preparing a gas for odor evaluation, comprising:

• a gas chromatograph including a separation column configured to temporally separate a plurality of components contained in an odoriferous analysis-target gas;
• a first passage into which the plurality of components exiting from the separation column are introduced;
• a timing detector configured to detect, for each of the plurality of components, a timing at which the component exits from the separation column;
• a gas collector including an attachment port to which a sample bag is to be attached and a passage switcher configured to switch a condition of connecting the first passage and the attachment port, and configured to collect, into the sample bag, a gas containing all or some of the components exiting from the separation column when the analysis-target gas is passed through the separation column;
• a timing setter configured to set of a timing at which a component contained in the gas to be collected into the sample bag exits from the separation column based on a detection result of the timing detector;
• and
• a second passage connected to the first passage at a position between the separation column and the passage switcher;
• a gas introducer connected to the second passage and configured to introduce a dilution gas into the second passage.