For a minute, I thought it must be The Onion or the Babylon Bee... but no, it's The Guardian... making satire look sane.
So many bizzare claims.
A 2oz inhaler releases 10lbs of gas? Really? Maybe some confusion here... is it the device or the cartridge doing this? Is this one, or some larger group of them?
And the gas is Methane??? They're using a poisonous flammable gas as a propellant for an inhaled medicine?