Fogger

A fogger, wherein, the fogger comprises:

• a casing with an air suction inlet and a spray port;
• an air duct assembly located in the said casing, wherein the air duct assembly includes an air duct shell and a fan, of which the said air duct shell has an air inlet, an air outlet, and an air duct that connects the said air inlet and the said air outlet, and the said fan is located in the air duct;
• the said air inlet is connected to the said air suction inlet, the said air outlet is connected to the said spray port;
• a liquid storage tank located in the said casing, wherein the liquid storage tank delivers liquid to the said spray port via a liquid delivery tube, and the said air duct is connected to the liquid storage tank via an air delivery tube;
• and
• wherein a one-way valve is located along the said air delivery tube, and the said one-way valve is used to control the one-way flow of air from the said air duct to the said liquid storage tank.