How mammals' brains evolved to distinguish odors is nothing to sniff at

https://phys.org/news/2019-07-mammals-brains-evolved-distinguish-odors.html

Study of olfactory bulb ratio in modern birds suggests dinosaurs may have had strong sense of smell

https://phys.org/news/2019-06-olfactory-bulb-ratio-modern-birds.html

The Myth That Humans Have Poor Smell Is Nonscents

https://www.theatlantic.com/science/archive/2017/05/alls-smell-that-ends-smell/526317/

Dinosaurs breathed through their noses to cool their BRAINS - and discovered their surroundings using heavy, moist sniffs

http://www.dailymail.co.uk/sciencetech/article-2795925/dinosaurs-breathed-noses-cool-brains-assessed-surroundings-using-heavy-moist-sniffs.html#ixzz3GPWk5ZDD

New study finds that elephants evolved the most discerning nose of any mammal

http://www.washingtonpost.com/national/health-science/new-study-finds-that-elephants-evolved-the-most-discerning-nose-of-any-mammal/2014/07/22/8b715a1e-11b1-11e4-8936-26932bcfd6ed_story.html

Compared to Neanderthals, modern humans have a better sense of smell

http://tinyurl.com/c7ljd35

Big Brains Smell

In Evolution of Brains, Sense of Smell Came First

Bird Smell

Could smell play a role in the origin of new bird species?