Why doesn't fried eggs have s smell like hard boiled eggs do?

Fried eggs and hard-boiled eggs have different cooking methods that influence their odors. When eggs are boiled, sulfur compounds in the egg white can react with iron in the yolk, especially if overcooked, producing a noticeable sulfur smell. In contrast, frying eggs typically cooks them faster and at higher temperatures, which limits the formation of these sulfur compounds, resulting in a milder scent. Additionally, frying often enhances the aroma of the fats used, contributing to a different overall smell.