Why Dogs
A dog's sense of smell is a million times more sensitive than a human's. Canines can be trained to detect a wide variety of specific odors, such as explosives, humans, drugs and even fruits and vegetables.
current expertise
...according to current technology and expertise, dogs are widely considered the most effective method for detecting bombs due to their superior sense of smell, allowing them to identify even minute traces of explosives that machines might miss; making them a highly valuable asset in security opertations.
