Question

How strong is a dogs sense of smell?

Answer 1

Dogs' sense of smell overpowers our own by orders of magnitude, it's 10,000 to 100,000 times as acute, scientists say. sniffing dogs are super successful because many try to mask the order with perfume or other food, but dogs can sniff past everything and pick out the scent they are trained to catch.
 Dogs can smell separately with each nostril. Just as our eyes compile two slightly different views of the world, and our brain combines them to form a 3-D picture, a dog’s brain uses the different odor profiles from each nostril to determine exactly where smelly objects are in the environment.