We've got 5-6 million scent receptors in our noses. Dogs have around three hundred million, depending on the breed. They even have a far bigger spot of their Mind devoted to their sense of smell, in addition to a Jacobson’s organ that can help them detect Commonly undetectable odors, for https://www.thewildest.co.uk/dog-behaviour/how-to-prepare-your-dog-for-daycare-kennels