1.   But base officials then made no reference to what motivated the unit to set off the massive noxious cloud.

2.   It will not precede you into a room like a noxious cloud.

3.   Maybe when their children were babies there was something in the tap water, or maybe they unknowingly walked through a noxious cloud on the way to school.

4.   Brown-coal power plants in northern Bohemia fill the air with noxious clouds.

5.   By the desk of Vice Mayor Sead Avdic is a painting of the smokestack skyline topped by a billowing noxious blue cloud.

6.   On Saturday, the peaks of Chances and Paradise mountains still were obscured by the noxious clouds that blanketed lush green vegetation in gray ash.