I would never get close enough to catch one of them in a frame. Which distace do you keep? At my place are several city foxes and one of them was sniffing at my leg while I was sitting next to a river. i was so scared but he didn't mentioned me and moved on by sniffing the next tree.
It's great, though the weird thing is that some of its breath (the "smoke") seems to be a ghost image of its snout, eyes and even eyelashes. It's an exquisite shot with all of the single bits of ice crystals and melted snow hanging off its fur and eyelashes even.
It's good that that fox wasn't actually smoking because then it would be even more stupid than StupidFox).