4-Ethylphenol is widely used in the flavor and fragrance industry due to its strong, smoky, and medicinal odor. It is a key component in creating aromas for various products, including perfumes, cosmetics, and food flavorings. In the food industry, it is often employed to enhance the smoky or spicy notes in processed meats, cheeses, and other savory products. Additionally, it serves as an intermediate in the synthesis of more complex chemical compounds, particularly in the production of pharmaceuticals and agrochemicals. Its antimicrobial properties also make it useful in certain industrial applications, such as preservatives or disinfectants.