Definition
to locate something or someone by using the sense of smell
嗅出
She can sniff out the source of food quickly.
她可以迅速嗅探出食物的来源。
The dog can sniff out the mouse hiding behind the wall.
那只狗可以嗅探出藏在墙后的老鼠。
The police used sniffing dogs to sniff out illegal drugs.
警方使用嗅探犬来嗅探出非法毒品。