Ever since forever we’ve been told that dogs’ noses are superior. It was thought that the small size of our olfactory bulb relative to our large brain meant our sense of smell was weak. But size doesn’t matter. Our bulb’s make-up is complex enough to potentially distinguish up to a trillion odours, comparable to some animals. The real difference, per new research? The types of odours we can pick up on, based on our environment. For dogs? Urine. For us? Perfume. And we can train the sense – spend more time sniffing ordinary things, like cinnamon or suede, and you’ll notice it in your fragrance, making you more adept at sniffing out the scent for you.