What is more annoying that a constant ringing sound in your ear? It will drive you nuts! Humming, swishing, clicking, or echoing sounds in your ears usually, points to one thing – tinnitus. The most common reason of tinnitus is prolonged exposure to loud sounds, which causes permanent harm to the cells of the cochlea, a small organ in the inner ear. Among those whose jobs put them at risk for tinnitus are pilots, rock musicians, carpenters, street repair workers, and/orlandscapers.