- last post: 01.01.0001 12:00 AM PDT
Their breathing apparatus is completely self contained. And they don't have enough methane on 'em to cause any significant explosion. Oxygen, for example, is highly flamable, yet we need it in order to breathe. The reason there isn't some huge explosion when someone lights a cigarette is because we breathe air with about 20% oxygen in it, and that's enough for us to survive. Oh yeah, methane is also about 50% + of what we fart, so the Grunt homeplanet must be very stinky.