New research from the University of Washington and NOAA Fisheries' Northwest Fisheries Science Center shows this powerful sense of smell might be in trouble as carbon emissions continue to be absorbed by our ocean. Ocean acidification is changing the water's chemistry and lowering its pH. Specifically, higher levels of carbon dioxide, or CO2, in the water can affect the ways in which coho salmon process and respond to smells.

— Read more at Salmon may lose the ability to smell danger as carbon emissions rise at Science Daily.

Rocky meanwhile has all the potential to become an excellent truffle dog. Except for his weakness for eating his finds.

— Giovanni Monchiero teaches dogs to sniff out truffles in Roddi, Italy. Read more at 'For the dog, it's a game': sniffing out truffles in Italy at Yahoo, or watch the video, or listen to this 10 minute BBC radio spot from early last year.

Furthermore, the researchers found that chimpanzees sniffed longer at the odor the more closely related they were to the odor donor, providing the first evidence for odor-mediated kin recognition in non-human great apes.

— Read more at Chimpanzees sniff out strangers and family members at Science Daily.

We show that in species that specialize on seed dispersal by lemurs—an olfactorily oriented primate—fruits increase scent production and change their chemical composition significantly more than sympatric species whose seeds are largely dispersed by birds.

— Read more at Fruit scent as an evolved signal to primate seed dispersal at Science Advances.