dirty puddle after flood with dirt and mudd and many flies show danger of infections epidemic plagues pestilence and epidemic cont

accident animal area background biohazard catastrophe chemical contaminated contamination copy danger dangerous dead death defilement dirty disaster dump ecology environment environmental feculent flies flood garbage global infections infective insanitary lake leaking life marine natural nature poison polluted pollution pond puddle river sea skim space toxic trouble unhygienic unsanitary waste water