And honestly, sitting downwind of the dogs, I'd realized my theory of the odorless wintertime Arctic didn't always hold.
First, they apply a small spot of odorless dye on the animal.
The men doing the sniffing were not told what was in the vial, and reported that the liquid was odorless.
c.1300, from Anglo-French odour, from Old French odor "smell, perfume, fragrance" (12c., Modern French odeur) and directly from Latin odor "a smell, a scent" (pleasant or disagreeable), from PIE *od- "to smell" (cf. Latin olere "emit a smell, to smell of," with Sabine -l- for -d-; Greek ozein "to smell;" Armenian hotim "I smell;" Lithuanian uodziu "to smell").
Good or bad odor, in reference to repute, estimation, is from 1835. Odor of sanctity (1756) is from French odeur de sainteté (17c.) "sweet or balsamic scent said to be exhaled by the bodies of eminent saints at death or upon disinterment."
odor o·dor (ō'dər)
The property or quality of a thing that affects, stimulates, or is perceived by the sense of smell.
A sensation, stimulation, or perception of the sense of smell.