Whoopsie
Uhm, I almost hate to break it to you folks, but methane doesn't have a distinctive smell--it is colourless and odourless*. That's why tiny amounts of hydrogen sulfide are added to the methane in natural gas pipelines and storage containers--so that the human nose can detect a gas leak. At least, it is added here in the US, I don't know what other countries may do, if anything.
*Look it up.
Biting the hand that feeds IT
