3 ms·Hydrogen does not explode unless mixed with oxygen or other comburents.by goodpoint 5y agoHydrogen does not explode unless mixed with oxygen or other comburents.jacquesm 5y agoFortunately there isn't any free oxygen in the atmosphere. Oh, wait.goodpoint 5y agoFortunately the atmosphere is not inside the hydrogen tank. That's why it can flame out when pierced but not explode.