1.   A customs officer came round with a dog to sniff out drugs.

2.   At a fairly young age I learnt to sniff out danger and step into choppy conversations to skilfully avert disaster.

3.   I became an expert at sniffing out potential humiliation.

4.   Pseudonym detection squads would sniff out fraudsters, like the satellites which monitor Sicilian olive groves.

5.   Some machines sniff out plastic explosives.

6.   Some take off their masks to sniff out strange odors.

7.   She had a talent for sniffing out bargains.

8.   ...journalists who are trained to sniff out sensation or scandal.

9.   A police dog, trained to sniff out explosives, found evidence of a bomb in the apartment.

10.   To have wide flaring nostrils to sniff out those stinkwaves.