I've not made a sporran using goat but I have made knife sheaths from hair on goat that I tanned. I never noticed any smell to them and I picked the most pleasing color pattern to use. The hair was about 1.5 inches long and fairly coarse. Then again, it was from a meat goat. If I get the chance to process another goat I'll think about a goat sporran. Best I remember, it was comparable to deer hide as far as weight and toughness.

YMOS,
Tony