Related to the sense of smell or the organs that allow you to smell.
From Latin 'olfacere' (to smell), combining 'olere' (smell) and 'facere' (make). The term became scientific terminology in anatomical contexts.
Your olfactory nerves are directly connected to your emotional and memory centers—that's why a single smell can instantly transport you back 20 years, more powerfully than any other sense.
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