Spray cans, Butane fuel, Scuba tanks, Oxigen bottles, etc.
Loaded Firearms, Ammunition, Gun Powder, Pepper Spray or Tear Gas (Unloaded firearms must only be accepted as checked baggage by the airport police or proper authority) etc.
Battery leakage, Lavandin, ammonia, oven cleaners, multiporpuse cleaners, etc.
Another dangerous items:
Gasoline-Powered tools, Camping equipment with fuel, radioactive materials (incluiding radio pharmaceuticals), Oxidizers, Corrosives, Poisons, Infections substances, etc. The transport of skaters or self-balancing vehicles with battery operation, with or without wheels (hoverboards) on commercial flights is prohibited both as hand luggage as registered in load compartment.