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Dry chemical extinguishers contain either ammonium phosphate (class A:B:C) or sodium bicarbonate (class B:C [baking soda, as in Arm & Hammer]). Class D extinguishers (dry powder) are for fighting water-reactive metal fires and contain powdered graphite or some proprietary powder. All of these are pressured with compressed nitrogen generally to 195psi. Any of these would "inconvenience" a BG by blowing "sand" in his eyes and making breathing difficult.
Like carbon dioxide (CO2) exinguisher, Halon ones convert a pressurized liquid into vapor (gas) upon discharge. Either could suffocate the BG or cause frostbite of the eyes.
The only common extinguisher which emits a liquid are the 2½ gallon water pressure ones which are charged with compressed air to 100psi. It would not be difficult for a BG to defend himself against this type.
Hope this helps.
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