sniffer

Existing methodology can involve plough-like, armor-plated machines, handheld metal detectors and sniffer dogs.

In the face of such compelling images, the immediate response is to send money, food, medicines, relief workers, sniffer dogs.

She had seen hell, one might say, and is the Sphynxian sniffer at the value of a secret.

He has had ten dollars' worth of telling to-day by 'Sniffer' Orne.