Yep, there is such a thing as unscented regular Airspun powder without the sparkles. I found it at KMart in a rack full of the Fragrance Free Luminous powders. It was the only plain fragrance free jar; it has an aqua label like the Luminous, but the back label says "Translucent" rather than "Luminous Translucent" and although under the store lighting the pearlescence of the Luminous type was clearly visible in the canister, this stuff has the same finish as the regular Airspun. Just no perfume.
I personally like the regular Air Spun perfume and will keep a jar of the scented powder around but sometimes I don't want to wonder whether my powder is clashing with my perfume when I touch up.