The present invention relates to a Sphingomonas sp. MD2 strain (KCTC 11845BP), a composition including the strain for decomposing methane or odor-producing compounds, a biocover or biofilter including the composition, a method for decomposing methane or odor-producing compounds using the composition, a system for decomposing methane or odor-producing compounds using the biocover or biofilter, and the use of the strain for decomposing methane or odor-producing compounds. According to the present invention, methane and odor can be effectively removed concurrently, and thus the cost required for the separate treatment of methane and odor can be reduced, and methane and odor-producing compounds in landfills or the like can be effectively decomposed.
