Happened at Orly a while ago, a rucksack left beside the conveyor belt.
Baggage hall was evacuated, bomb disposal wallah arrived, short little funny fellow lacking a few fingers. (QED). Don't know what he did but the whole process took less than an hour before all were on their way again.
No trumpets, fanfares or blasts of self importance. Simple clean cut Gallic efficient pragmatism.