[pendy]

Seriously, I think they do use a lot of sulphur and some sulphur compounds are highly combustible - i.e. the buggers blow up in certain circumstances.

That said, the advice from Hyndburn will probably be as follows:-

1. Get the cat in.
2. Close all your doors and windows.
3. Draw the curtains.
4. Bend over, put your head between your knees, and kiss your a*** goodbye!