Smith also blocked four shots and perpetrated three steals as Atlanta stayed hot with a fifth win in six games.
Zaza Pachulia helped out with a double-double of 12 points and 10 boards for Atlanta.
New Orleans, meanwhile, fell for the 13th time in 15 games despite five 3-pointers and 23 points from Ryan Anderson.
Greivis Vasquez contributed 17 and 10 assists, but it wasn't enough for the Hornets.
Ray Liotta sues skin care company over use of likeness
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