To obtain a deodorizer having a simple constitution, in which a bad odor in the case of a defecation in a flush type stool can be prevented and removed after the initial stage of the generation, and to obtain a flush stool with the same.

In the deodorizer with a bubble discharge nozzle 31, in which a front end section is arranged in a space in a tank for a flush type stool body 1, and an air-liquid mixing section 32 supplying the nozzle 31 with a surface-active agent aqueous solution and air, the nozzle 31 discharges the aqueous solution and air as bubbles, and the inside of the tank for the stool body 1 is covered with the layer BL of discharged bubbles.