Blood wasn't a deterrent for Harry. If anything, it was so commonplace he only noticed because no one else was currently bleeding or bloodstained. The scent was what caught his attention as he was passing. He turned to look, since it took rather a large amount of blood to actually smell in such a crowd, and he zeroed in on a man in a tux. Harry backtracked and gave a low whistle at the amount of rusty brown staining the nice material.

"Tha's a pretty big stain there."