1.   Diesel fumes can kill.

2.   Poisonous fumes killed many of them.

3.   But many of the victims were killed by fumes before they could make it to the shelters.

4.   Officers carried canaries, hoping that any toxic fumes would kill the birds first.

5.   Some officers carried canaries, apparently hoping that any toxic fumes would kill the birds first and warn police.

6.   Three small Ukrainian children were killed by fumes from a linoleum floor that caught fire while their mother was asleep in the next room, an official said Thursday.