CS gas is not known to have caused any deaths or permanent injuries, however its use has been banned in some American military operations
"Police and Security News" states: "In a confined space, CS can readily induce panic behavior if the adversary is unable to escape the contaminated area." According to a handbook called the "Police Chemical Agents Manual," during exposure to CS a person is "incapable of effective concerted action." Toxicologists describe the effects of CS as incapacitating, and certainly not the agent of choice if a fire is anticipated.
there are at least two reasons why CS probably did not worsen the situation during the seige. First, on the day tear gas was deployed there was a steady 17 to 24 mph wind, which, combined with gaping holes in the compound made by the tanks, created a situation where much of the tear gas was blown away. Second, there was a supply of gas masks inside the comound, some of which were used by the Davidians during the seige. A fire report written by Texas-based investigators called the tear gas operation a failure.
Sources:
"Police Chemical Agents Manual" written by Thompson S. Crockett
"Police and Security News" May/June 1988, article by William E. Burroughs, Staff Instructor, Smith & Wesson Academy.
Fire Investigation Report, Branch Davidian Compound, Waco TX, report date July 13, 1993 by Paul C. Gray et al.
They used a flammable form of military CS, that when ignited, released HCN.
They also used diesel fuel in the tanks, fuel which when burned can form carbon monoxide, a deadly poison. Is it your position that the authorities then used carbon monoxide against the davidians?