Audio is to sound as blank is to smell? [closed]
Solution 1:
"Audio" means "digital or analog signal representing sound by indicating the variation of air pressure over time." I don't believe we have any technology for producing signals that represent scents in an analogous way, so there is no analogous word for scent.
"Audio" is originally the Latin word for "I hear," and "video" is Latin for "I see," so if scent signals ever become commonplace, we might refer to them using the Latin word for "I smell." According to Wiktionary, that word is "olfacio" (not "olfactio").