1.   Great electrical bursts of dazzling blue and purple light explode behind copious amounts of dense smoke which obscures the entire stage.

2.   He lit a fire, which sent out clouds of dense smoke.

3.   The candles were useless in the dense smoke, and it was many minutes before we could see.

4.   Voice over Firefighters wearing special protective clothing made their way through the dense smoke towards the fuel flask.

5.   Black dense smoke rose up.

6.   Dense smoke swirled and billowed, its rank fumes choking her.

7.   A particularly effective dense white smoke is produced by exposing titanium tetrachloride to the atmosphere, but this is both toxic and corrosive.

8.   Firefighters wearing special protective clothing made their way through the dense smoke towards the fuel flask.

9.   Dense toxic smoke poured from the burning building at Brimscombe near Stroud in Gloucestershire early today.