Drosophila busckii (IMAGE) Max Planck Institute for Chemical Ecology Caption The fruit fly Drosophila busckii on rotting spinach. While the smell of decomposition repels related species because it indicates toxic sulfur compounds, these flies are actually attracted to the odor. A team of researchers has now discovered why. Credit Benjamin Fabian, Max Planck Institute for Chemical Ecology Usage Restrictions Credit must be given to the creator. Adaptations must be shared under the same terms. License CC BY-SA Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.