Tipronic Burning Smell in Manual Mode

[MichaelT]

I get a faint burning smell inside my 2004 Boxster with 38K, almost smells like an electrical burn to me, my son describes as a burning clutch odor. I have only noticed it when aggressively driving in the mountains when repeatedly using the manual thumb-shifters on the steering wheel. I've searched, but have not seen any previous comments about this. As soon as I quit using the manual thumb shifters the odor dissipates and all is well, either way it shifts and drives just fine, but that smell, which I cannot pinpoint inside the car concerns me. Anyone have any ideas before I take it in.