List of very toxic gases in The Great Ice Age

during The Great Ice Age in World War III: The Interplanetary War between the Heroes and the Villains and Fight to the Death 1a: The Great Ice Age, many toxic gases are released into the air that killed many animals and people, a brief list of them is shown here.
many of these toxic gases have been assigned by the NFPA 704 as having health codes of 4 or 3.
Gas Name 	Chemical Formula	PubChem ID
Ammonia 	NH3 	222
Argon 	Ar 	23968
Arsenic Pentafluoride 	AsF5 	82223
Arsine 	AsH3 	23969
Benzene 	C6H6 	241
Boron Tribromide 	BBr3 	25134
Boron Trichloride 	BCl3 	25135
Boron Trifluoride 	BCl3 	6356
Bromine 	Br2 	24408
Bromine Chloride 	BrCl 	61697
Bromomethane 	CH3Br 	6323
Butane 	C4H10 	7843
Carbon Dioxide 	CO2 	280
Carbon Monoxide 	CO 	281
Carbon Trioxide 	CO3 	N/A
Chlorine 	Cl2 	24526
Chlorine Pentafluoride 	ClF5 	61654
Chlorine Trifluoride 	ClF3 	24637
Chloropicrin 	CCl3NO2 	6423
Cubane 	C8H8 	136090
Cyanogen 	C2N2 	9999
Cyclobutane 	C4H8 	9250
Cycloheptane 	C7H14 	9265
Cyclohexane 	C6H12 	8078
Cyclooctane 	C8H16 	9266
Cyclopentane 	C5H10 	9253
Cyclopropane 	C3H6 	6351
Cyclosarin 	C7H14FO2P 	64505
Diazomethane 	CH2N2 	9550
Diborane 	B2 	6328200
Dichloroacetylene 	C2Cl2 	24227
Dichlorosilane 	Cl2H2Si 	61330
Dodecahedrane 	C20H20 	123218
Ethane 	C2H6 	6324
Ethanol 	C2H6O 	702
Ethylene oxide 	C2H4O 	6354
Fluorine 	F2 	24524
Formaldehyde 	CH2O 	712
Germane 	GeH4 	23984
Helium 	He 	23987
Heptane 	C7H16 	8900
Hexaethyl tetraphosphate 	C12H30O13P4 	12960
Hexane 	C6H14 	8058
Hydrogen 	 	
Hydrogen Azide 	 	
Hydrogen Cyanide 	 	
Hydrogen Selenide 	 	
Hydrogen Sulphide 	 	
Hydrogen Telluride 	 	
Icosane 	 	
Krypton 	 	
Neon 	 	
Nickel tetracarbonyl 	 	
Nitrogen 	 	
Nitrogen Dioxide 	 	
Octane 	 	
Osmium Tetroxide 	 	
Oxygen 	 	
Oxygen difluoride 	 	
Pentane 	 	
Perchloryl fluoride 	 	
Perfluoroisobutylene 	 	
Phosgene 	 	
Phosphine 	 	
Phosphorous Pentafluoride	 	
Pinacolone 	 	
Propane 	 	
Sarin 	 	
Selenium Hexafluoride 	 	
Silicon tetrachloride 	 	
Silicon tetrafluoride 	 	
Soman 	 	
Stibine 	 	
Disulphur Decafluoride 	 	
Sulphur Dioxide 	 	
Sulphur Tetrafluoride 	 	
Tabun 	 	
Tellurium Hexafluoride 	 	
Tetraethyl pyrophosphate 	 	
Trifluoroacetyl chloride 	 	
Tungsten hexafluoride 	 	
VE 	 	
VG 	 	
VX 	 	
Xenon 	 	
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