>>27021646The principle is the same, enclosed space for the CO2 to concentrate. But if you live in an apartment you will need to seal everything properly or it will leak outside and alert others or the CO2/fire alarms will go off. Worst case scenario you can kill everyone nearby when they open the door or the leaks will slowly kill your neighbours and everyone on the floors above. If you can still jump from a respectable height at least 3m~ you can use a strong rope to break your neck instantly.