Suppose you enter in a room and notice a disgusting smell on your first walk into the room, but you stop noticing it when you stay there for a while. What does it illustrate?

Sensory adaptation
Explanation: Sensory adaptation occurs when the sensory receptors become exposed to stimuli for a long period. It refers to a reduction in sensitivity to a stimulus after constant exposure to it. It can occur with our basic senses. There are multiple examples of sensory adaptation in everyday life. As an instance, people who smoke no longer notice the smell of cigarette smoke.