Dimethyl Sulfide as an Odor Component in Nova Scotia Fall Mackerel

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Abstract
A strong petroleum refinery odor in mackerel taken in late November 1971, near Halifax and on the outer edge of the Emerald Bank, has been identified as harmless dimethyl sulfide. It has been shown to originate from stomach contents and is specifically associated with the pteropod Spiratella retroversa. The dimethyl sulfide was not accompanied by any very large deposition in the fish of the known precursor of algal origin, dimethyl-β-propiothetin. Petroleum product pollution was not involved.

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