Which Have the Better Sense of Smell...cats or dogs?

https://parade.com/118414/kaleethompson/31-battle-of-cats-vs-dogs/

The human nose has about 5 million olfactory receptors, microscopic proteins that allow us to detect odors. With 45 million to 80 million receptors, cats have a far better sense of smell—but they can’t measure up to the average dog, whose snout holds between 149 million and 300 million receptors. The canine sense of smell may be a thousand times better than ours, and so discerning that dogs can not only track a missing person but distinguish whether he recently had a meal or smoked a cigarette. Historically, dogs relied on their superior snouts to find prey and avoid predators. These days, dogs are trained to sniff out everything from bedbug infestations to the chemical changes that indicate early-stage cancer.

Winner: DOGS