I finally changed out the cabin air filters. The directions are not in the owner’s manual (for shame Mazda!!) and the internet had me cowering in fear over this (disconnect battery, remove large and fragile electronic assembly…). Turns out that 5’s with the manual climate control like my base Sport don’t have to do any of that! Pop out the plastic kick panel, undo a few bolts, and voila. Now it’ll smell a little fresher!