True. Olfactory receptors, which are responsible for our sense of smell, generally display adaptation. This means that over time, our sense of smell becomes less sensitive to a particular odor as we are exposed to it for a prolonged period. The receptors become less responsive to the odor, and we may no longer notice it or perceive it as strongly as we did initially. This adaptation process is why we may not notice the smell of our own home or workplace, for example, but may be more sensitive to new or unfamiliar smells.