hypothetical scenario: dumbbell tied around neck while in a pool, then making yourself pass out, drown painfree, hypothetically

[SufferingInDenmark]

hypothetical scenario: you are standing in a pool, with a dumbbell tied around your neck, you hypothetically inhale computer duster or whatever gas,
and then you pass out and fall to the bottom of the pool, unconscious

this would hypothetically cause pain free drowning, right?