Treacherous \Treacher*ous\, a. [See Treacher.] Like a traitor; involving treachery; violating allegiance or faith pledged; traitorous to the state or sovereign; perfidious in private life; betraying a trust; faithless. [1913 Webster] Loyal father of a treacherous son.
Fuel Safety Tips. 1  If you need to transport fuels such as propane, gasoline or oil, it should only be carried in approved containers certified by agencies such as the Canadian Standards Association or Underwritersâ Laboratories of Canada. 2  Containers should never be filled right to the top.
Whenever you use Butane, you need to take certain precautions to stay safe. Calor is committed to giving you all the information and advice you need to use your Butane effectively and safely, so weâve created a guide to using our gas bottles. Never try to disconnect or unscrew a regulator from a gas bottle if the flame doesnât go out when the cylinder hand wheel is turned off. 2  When using a 4.5kg gas bottle, avoid using the rubber washer from the protective black cap as a sealing washer.