Dimethyl sulfide (DMS) or methylthiomethane is an
organosulfur compound with the formula (CH
3)
2S. Dimethyl sulfide is a water-insoluble flammable liquid that boils at and has a characteristic disagreeable odor. It is a component of the smell produced from cooking of certain vegetables, notably
maize, cabbage,
beetroot and seafoods. It is also an indication of
bacterial contamination in
malt production and
brewing. It is a breakdown product of
dimethylsulfoniopropionate (DMSP), and is also produced by the bacterial metabolism of
methanethiol.