21.   The purple flowers, which bloom only at night, have an unpleasant odor, like something moldy.

22.   Passengers and police were quoted as saying that an unpleasant odor from a small box wrapped in a newspaper on a subway car had made people ill.

23.   Passengers and police were reported as saying an unpleasant odor emanating from a small box wrapped in newspaper on a subway car had made people ill.