1.   ...billowing clouds of cigarette smoke.

2.   As the sun bursts through billowing clouds a thousand leagues in red.

3.   As the sun heats the ground, ascending currents of moistened air will cause billowing clouds to form, some of which will produce thunderstorms.

4.   Billowing clouds of ash poured through the streets, covering everyone and everything with ghostly gray-white soot.

5.   But because the fat all drips to one side, it began to burn, throwing off billowing clouds of smoke.

6.   Over it all floats billowing clouds of exhaust from countless cars, taxis, and buses.

7.   Travel through star fields of the Milky Way, our home galaxy, and the billowing clouds of gas and dust where new stars are born.

8.   When he reached the last fork in the branch, he was perched above billowing clouds that hovered over the forest canopy a thousand feet below.

9.   A billowing cloud of black smoke was seen from the northern side of the city, a Senegalese military commander said on customary condition of anonymity.

10.   After a strike, people in the market watch billowing clouds of smoke rise skyward.