Mine also seems to get very smelly very quickly.I know my way around a clutch which is why the smell is baffling. I've almost always gotten good clutch life out of my vehicles including putting 70,000 miles on the OEM clutch of a '99 Miata while doing a half-dozen ProSolo autocrosses every year for 5 years with probably 16 drag race starts per event.
This makes me think that something else is going on here, perhaps a hydraulic issue or a rear main seal leak. I'll have the dealer give it a once-over and see if there's anything obviously wrong.