To give an interruptive character to an olfactory stimulus by aggressively controlling the olfactory stimulus generated by an olfactory stimulus generator by adopting a deodorizing device and an air conditioner at the same time.

By using the device of an olfactory stimulus generator or a deodorizing device and air conditioner using wind or chemical reaction force, the following two problems can be solved: (1) To remove olfactory stimulus by aggressively discharging the olfactory stimulus generated by a single or plural olfactory stimulus generators by using a single or plural deodorizing devices or air conditioners. (2) To aggressively substitute the olfactory stimulus by generating other kinds of olfactory stimuli by the olfactory stimulus generator in addition to the (1).