With an sensitive as a dog's nose is, I suspect they do smell different, dead and different species...

She is doing better than I thought to be honest. She's bringing toys and wanting to retrieve. I have to keep her on a leash when doing up an down stairs as she just wants to tear up and down them. I'd say the swelling is down to maybe 50% of normal. She also seems to be putting more weight on the leg as well. All very good signs! Only time will tell how much skin and flesh dies due to necrosis. Then what is anything will be the long term affects? That is going to be the big question....