When the children of Ammon saw that they stank, &c, They wanted not intelligence how heinously David resented the barbarous usage of his ambassadors; which is expressed by a phrase signifying that they were become very odious to him.
Related Commentaries of 2 Samuel 10:6
2 Samuel 10:6
6 And when the children of Ammon saw that they stank before David, the children of Ammon sent and hired the Syrians of Bethrehob, and the Syrians of Zoba, twenty thousand footmen, and of king Maacah a thousand men, and of Ishtobb twelve thousand men.