Wrongo. It's true that tear gas doesn't start fires but the tear gas canister creates tremendous heat to make the chemicals hot enough to make smoke that billows out of the canister. If it lands on something flammable it will create a fire.That's what happened at Waco.The FBI used tear gas and numerous times prior to this tear gas resulted in fires.
The FBI knew this was a possibiliity when they used it
Tear gas does not cause fires , they caused the fires. They committed suicide.
DEATH IN WACO: The Tear Gas; Chemical Isn't Meant to Cause Fire