You traverse a corridor for some time, making topical small talk so as to keep your spirits up.

Presently you come to a dank shadowy room. As you enter the door slams heavily behind you of its own accord, causing you to give a start and jump into Roy's arms. You apologise for the intrusion and get down.

In the room are:

A canary in a cage in the corner
A box of matches of an inferior brand
An Ideal Home catalogue

Several shadowy passages lead off from the chamber.

Suddenly you hear a hissing sound.

Roy's nostrils twitch twice beneath his trademark dark glasses. 'I believe I can smell gas.'

Gas! What can you do?

Will you:

Use the canary?
Strike a match to see better what is going on?
Lie down on the floor where the air will be clearer, reading the Ideal Home catalogue to while away the time until the gas evaporates?
Wrap Roy Orbison in Clingfilm?

Think carefully and make your choice...