It's mutated broccoli! (Courtesy to a certain annoying advertisement banner.)
Anyway, it's probably a human corpse. A human shell to be more exact, because from the looks of it there can't be a lot of stuff left in there. And the colour can be either mold, body paint, or the Blizzard Enemy Color Coding System (tm).
http://www.youtube.com/watch?v=D0aakGdBSl8
It's easier to see if you watch a high def video or the video on the D3 site.
warrggghhh xD
Be my Buddy =^.^=
Anyway, it's probably a human corpse. A human shell to be more exact, because from the looks of it there can't be a lot of stuff left in there. And the colour can be either mold, body paint, or the Blizzard Enemy Color Coding System (tm).
Join the chat!
I think he meant how does he smell as in what does he smell like, not how does he functionally smell
Anyway, my guess would be along the lines of a long-tortured civilian. I don't know why he'd be throwing a zombie around.