1)Methane is odorless so no help there.
2)There isn't a high enough concentration (thankfully) to sustain combustion of the diffused methane so only the little draft pulled through the flame will actually burn a very small amount of methane.
3) The stinky bits of fart gas are sulfur containing compounds like hydrogen sulfide and thiols and adding more stinky sulfur from the match seems a bit counterproductive. Maybe he is a homeopath?
All in all, sounds like a pretty useless behavior. Does he like the smell of burned matches?
2)There isn't a high enough concentration (thankfully) to sustain combustion of the diffused methane so only the little draft pulled through the flame will actually burn a very small amount of methane.
3) The stinky bits of fart gas are sulfur containing compounds like hydrogen sulfide and thiols and adding more stinky sulfur from the match seems a bit counterproductive. Maybe he is a homeopath?
All in all, sounds like a pretty useless behavior. Does he like the smell of burned matches?
So how, exactly, does God know that She's NOT a brain in a vat? 
