a machine that sends out a fog produced by very small drops of hot water or a chemical in order to clean an area or get rid of insects, etc.

I wish I'd bought a flea fogger. 我真希望自己买了一个去除跳蚤的杀虫喷雾器。

Potent pesticides are being sprayed from fogger trucks as a defence against the mosquito transmitted encephalitis. 为了预防蚊子传播的脑炎，装有喷雾器的卡车正在喷洒强力杀虫剂。