Lugdush was one of Saruman's Uruk-hai and a trusted subordinate of Uglúk. In the The Lord of the Rings: The Two Towers (film), Lugdush is the Uruk who smells "Man flesh" and warns the others. In the Extended Edition, Mauhúr is the one who smells "Man flesh" instead of Lugdush.
Read more about this topic: List Of Middle-earth Orcs