Recently the key role of emotions in decision-making process has been highlighted. In this article, we focus on fear-related emotions and their positive impact on the survival capabilities of human beings in case of crisis situation. The purpose of this paper is to clarify the impact of emotion on agents in the evacuation process; we only focus here on emotions and not on the evacuation process itself. We formalize the influence of three factors (decay, environment, contagion) on agents emotion and explore the influence of each of them. The emotion intensity of agents will be tested in case of moving or without moving. We will make some experiments to estimate the impact of three coefficients of decay, environment, contagion on the emotion intensity of groups such as max, min, mean and standard deviation value. The entire theoretical model has been implemented in the GAMA simulation platform.