Office of Foreign Assets Control (OFAC), a division of the U.S. Treasury Department. 1  The U.S. Office of Foreign Assets Control (OFAC) is a division of the U.S. Treasury and operates under Presidential authority powers. The OFAC administers and enforces economic and trade sanctions in accordance with U.S. policy and plays a role in tracking international terrorists.
Stool odor is the smell associated with stools, or bowel movements. Stools normally have an unpleasant odor. Stools are formed in the large intestine (colon), which is part of the digestive system.
There are many reasons that stools could appear black or tarry with a foul smell, including eating certain foods or taking iron supplements. However, black stools can also be a result of bleeding, and the darker color indicates that the blood could be coming from a point in the upper gastrointestinal tract. When stools are black or tarry due to blood being present, it is called melena..