Many Enterobacters have distinctly fecal smells to them. I worked with describing Enterobacter cloacea as soft rot pathogen of ginger root. The decidedly foul smell is usually attributed to Hydrogen Sulfide rotten egg smell ammonia and various volatile indoles. Foul smelling ingredients can be signal for flies which can use the decay condition for the development of their larvae.
Enterobacter ferments lactose with gas production during a 48-hour incubation at 35-37 °C in the presence of bile salts and detergents. therefore it might like fecal odor