"...the slow smokeless burning of decay."

[Freakscene]

The same gas is used as aerosol propellant and in refrigerators, where it replaced the harmful the environment FKW (fluorocarbons). I have never seen in long years of laboratory work any bottle lid causing an arc when opening.

Of course caution is always necessary when handling chemicals of any kind, especially flammables.

I'm just saying it can happen.

Refrigerants used here need to be non-flammable to meet appropriate standards. High density PE bottles with Low density PE or other plastic lids arc moderately often when the atmospheric humidity is under 10% - a fairly common occurrence here. Standard operating procedures for bottles holding flammables often require users to earth them prior to opening.

Marty