It’s not thrush. The smell is more sweet smelling than putrid. I smell it quite often when cleaning out his feet. My pony is barefoot and has very healthy hooves. I’ve asked people about it, but no one seems to know what I’m talking about. A friend suggested it might be caused by bacteria in the soil. Currently the pony is in a dry lot for winter, but I smell it when he’s on pasture as well. Sometimes I will puts a thrush preventive on his feet in wet weather, but don’t use anything else on his feet that could cause it.
My farrier was out on Tuesday and I asked him about the sweet smell. He didn’t know and couldn’t smell anything. (He also said the feet were good and healthy with no thrush)
I’m not concerned, more so curious as to what may cause it or if anyone else has experienced something like it. My googling has turned up nothing.