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Does pure methane have an odour like butane gas? My little cousins and I discuss things like this.

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Pure methane has no odor. The odor is added to methane to make it detectable if there is a leak. It smells like an egg fart, sulphery, almost like faint skunk.

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Thanks eggzackly what I wanted. I suppose this is true of butane too..smell added?
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Methane smells like farts I think ...there is methane in flatulence!

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I need an exact answer...pure methane.
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You're welcome anyway
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I don't think it does. It is when it is combined with a sulfide gas that you get the stink or when it reacts with certain bacteria as within a septic system.

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Methane is odorless. Sulfur dioxide is added by the gas company so it can by easily noticed in case of a leak.

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Thanks everbody. Now I can explain the sources of smells in bowel gas to my little cousins. They think it is secret knowledge.
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