Yes, constant exposure to any sound over 85 dB can affect hearing. Not only is it the intense sound level, but duration of a semi-loud sound can be an issue. One study showed that farmers who use tractors are prone to having hearing loss on one side, the side closest to the motor. Research also shows that dentists exposed to the intense sound of a drill over time also have a higher rate of hearing loss. I worked as a long-distance telephone operator when I was in high school and college (Yes, that's how old I am!) I attribute the use of a single sided headset during those years as a probable cause of my own hearing loss. I also hunted, so was exposed to that noise too. I was susceptible to noise induced hearing loss. (NIHL), but nobody knew that then,