Did you read it? All methane inahlation will result in is hypoxia.
Hoaxy as it gets.
Yes I did read it ... did you? Methane would be one gas inhaled another would be hydrogen sulfide.
But hey, if you want to totally ignore all 35 references on the wikipedia page including; the BBC report, the New York Times article, and the UNICEF report, all of which were written before 2005, and conclude that jenkem was entirely conceived by the rejects of 4chan ... so be it.