Passengers and Crews Dangerous Goods Allowances
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Although some items carried by passengers and crew members may be hazardous, the Airlines make certain allowances for check-in or carry-on baggage. All other dangerous items must be declared.  A brief summary of the allowances and some restrictions are as follows:

TABLE 2.3.A Provisions for Dangerous Goods Carried by Passengers or Crew (2.3) Dangerous goods must not be carried in or as passengers or crew checked or carry-on baggage, except as otherwise provided below.
Permitted in or as carry-on baggage
	Permitted in or as checked baggage
		Permitted on one's person
			The approval of the operator is required
				The pilot-in-command must be informed of the location
NO NO	NO NO	NO NO	n/a n/a	n/a n/a	Disabling devices such as mace, pepper spray, etc. containing an irritant or incapacitating substance are prohibited on the person, in checked and carry-on baggage. Security-type attaché cases, cash boxes, cash bags, etc. incorporating dangerous goods, such as lithium batteries and/or pyrotechnic devices, are totally forbidden. See entry in 4.2, List of Dangerous Goods.
NO NO YES NO NO	YES YES YES YES YES	NO NO NO NO NO	YES YES YES YES YES	NO NO NO NO YES	Ammunition (cartridges for weapons) for sporting purposes securely boxed (in Division 1.4S), in quantities not exceeding 5 kg (11 lb) gross weight per passenger for that person's own use, excluding ammunition with explosive or incendiary projectiles. Allowances for more than one passenger must not be combined into one or more packages. Camping stoves and fuel containers that have contained a flammable liquid fuel, may be carried provided the fuel tank of the camping stove and/or fuel container has been completely drained of all fuel and action has been taken to nullify the danger. (see 2.3.2.5 for details). Carbon dioxide, solid (dry ice) in quantities not exceeding 2 kg (4.4 lb) per passenger when used to pack perishables not subject to these Regulations in carry-on baggage, provided the package permits the release of carbon dioxide gas. Operator approval required for checked baggage only. Wheelchairs or other battery-powered mobility devices with non-spillable batteries (see Packing Instruction 806 and Special Provision A67), provided that the battery is disconnected, the battery terminals are insulated to prevent accidental short circuits and the battery is securely attached to the wheelchair or mobility device. Note: Wheelchairs/mobility aids with gel type batteries do not require the battery to be disconnected, provided the battery terminals are insulated to prevent accidental short circuits (see 2.3.2.3). Wheelchairs or other battery-powered mobility devices with spillable batteries. (See 2.3.2.4 for details).
YES YES	NO NO	NO NO	YES YES	NO YES	Heat producing articles such as underwater torches (diving lamps) and soldering irons. (See 2.3.3.2 for details.) Mercurial barometer or thermometer carried by a representative of a government weather bureau or similar official agency. (See 2.3.3.1 for details.)
YES YES	YES YES	NO NO	YES YES	NO NO	Avalanche rescue backpack, one (1) per passenger, equipped with a pyrotechnic trigger mechanism containing less than 200 mg net of Division 1.4S and less than 250 mg of compressed gas in Division 2.2. The backpack must be packed in such a manner that it cannot be accidentally activated. The airbags within the backpacks must be fitted with pressure relief valves. Insulated packagings containing refrigerated liquid nitrogen (dry shipper), fully absorbed in a porous material and intended for transport, at low temperature, of non-dangerous products are not subject to these Regulations provided the design of the insulated packaging would not allow the build-up of pressure within the container and would not permit the release of any refrigerated liquid nitrogen irrespective of the orientation of the insulated packaging.

n/a = not applicable