Open Season!

In the centenary yr. of World War I, is it surprising that chlorine gas is back? (Actual debut: April 1915.)

'Furry' convention disrupted as 'intentional' gas incident sends 19 to hospitals

Hazardous materials technicians found the source of the chlorine gas, what appeared to be powdered chlorine, in a stairwell at the ninth floor, according to a statement from police.

[...]

“It was shocking,” said [Morgan] Smejkal while standing outside the hotel dressed in a red panda animal suit.

Now every amateur chemist/professional lunatic will be mixing it up in or under the kitchen sink. Tip o' the M.B. chapeau to the Wiki for clueing us how.

Alternatively a strong acid such as sulfuric acid or hydrochloric acid reacts with sodium hypochlorite solution to release chlorine gas but reacts with sodium chlorate to produce chlorine gas and chlorine dioxide gas as well. In the home, accidents occur when hypochlorite bleach solutions are combined with certain acidic drain-cleaners.

Unsure where the powder in the hotel hallway comes into it, but our research into poison gas is as yet embryonic.

And what kind of world do we live inhave you jerks made where furries are under physical, potentially murderous attack? Think it was the kind of weasel who equates homosexuality w/ bestiality, & is worried about "the kids"? (By which he means immature goats.)