To clarify with the false equivalence : when pressurized at more than atmosphere, the pressure pushes the hydrogen through containement easily. This is problema

To clarify with the false equivalence : when pressurized at more than atmosphere, the pressure pushes the hydrogen through containement easily. This is problematic, as we would need hermetic containement. If leaked into a house, the pressure remains 1 atm - the issue is not with the pressure, but with the amount of atoms of hydrogen being close enough that, if one catches fire, it will spread to enough atoms to cause an explosion that will raise a block. The atoms are not moving quickly to escape the house, they observe light motion as particles in the still-ish air of the house, so after some time they overcrowd the house without even having to reach the outside wall, they could all hang around the pipe.