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.
Propane + Grilling Safety. When handled correctly, propane gas is a safe, clean-burning energy source. Whether at home, in-transit, or at your local U-Haul propane refill station it is simple and easy to ensure safety for you and others. View our general propane safety tips.