olfactory
Olfactory (adj) means relating to the sense of smell. Example: “Dogs have a far more sensitive olfactory system than humans.”
How to use olfactory
Learner’s notesIn plain EnglishA formal, scientific word meaning "to do with smell."
Mostly used in scientific, medical, or technical writing rather than everyday speech.
Fill the gap
Can you complete this real example?
Dogs have a far more sensitive _____ system than humans.
Etymology
A learned borrowing from Latin olfactorius, built from olere ("to smell") and facere ("to make").