Possible Clues:

• Detect something suspicious
• Suspect duplicity
• You'd expect a whiff of this when Frank Sinatra was out with the Pack? Suspicious!
• Suspect trickery at sewer?
• Fear something wrong as alarms let off
• Sense something fishy
• Suspect something's wrong -- let alarms off
• Be old-style suspicious (3 words)
• Cricketer cutting fish to detect fishiness
• Suspect Old Bob Melvin lost place in Meath going all the way back