The paper critically reconstructs the crowd psychological heritage in phenomenological and social science emotion research. It shows how the founding figures of phenomenology and sociology uncritically adopted Le Bon’s crowd psychological imagery as well as what I suggest calling the disease model of emotion transfer. Against this background, it can be examined how Le Bon’s understanding of emotional contagion as an automatic, involuntary, and uncontrollable mechanism has remained a dominant force in emotion research until today. However, a closer look at (...) phenomenological descriptions and empirical investigations of how emotion’s spread shows that there is little evidence supporting Le Bon’s crowd psychological framework. Thus, I suggest that the disease model should be dismissed in favor of more plausible approaches to interpersonal emotion dynamics. (shrink)