21.   Acrid smoke still lay over the water and the trees.

22.   Acrid black smoke hung over sections of the city.

23.   Acrid smoke choked Mexico City on Thursday as a fire burned out of control on the border between the capital and the state of Morelos.

24.   Acrid black smoke from burning tires filled the skies as scores of youths pelted Israeli troops with rocks and Molotov cocktails.

25.   Acrid smoke from a rash of cooking fires mixes with the nauseating, sweet, penetrating odor of corpses.

26.   Acrid smoke from a wood-burning sidewalk teapot enveloped the adversaries and their supporters.

27.   By early afternoon, every other building seemed to be on fire and thick plumes of acrid smoke darkened the streets and rose high above the city.

28.   By early afternoon, virtually every other building was on fire and thick plumes of acrid smoke darkened the streets and rose high above the city.

29.   Four of the exits from the passageway were enveloped by the acrid black smoke from small fires that erupted.

30.   From the top of the Empire State Building, visitors can still see the acrid smoke rising from the ashen landscape known as Ground Zero.