Kurt's sweet tooth isn't particularly powerful. It's just part of his general passion for junk food in general. Either way, the smell catches his attention immediately from the tree he's perched in at the moment. Initially thinking he might have caught a whiff from a nearby shop, he skitters down a few branches before he realizes it's just some poor person going about her business with a bag of deliciousness.

He wouldn't bother her normally, especially not from a tree, but he remembers her. And feels like he didn't exactly make a great impression. Time to try and remedy that. Since it seems like she'll walk by if he stops to sit properly, he's still crouched like a lemur in the branch when he calls out, "Guten Abend. I remember you!"