Sewage stinks. But did you know that bacteria can make it smell better?
Ever wonder why rotten fish smell worse than beef? Find out on today's Moment of Science.
Things like coffee grounds and charcoal are called “physical deodorizers,” because they absorb tiny particles in the air that are causing the smell. The problem is, eventually they reach a state called “equilibrium,” in which the deodorizer has absorbed all it can.