The pheromones usually work in one direction. Otherwise female flies would also be attracted to other females. Also males seem to prefer infected females only [

The pheromones usually work in one direction. Otherwise female flies would also be attracted to other females. Also males seem to prefer infected females only [1]: > Housefly males are able to distinguish between male and female cadavers also when covered in infectious E. muscae conidia, and appear to readily initiate courtship and mating strikes towards infected female cadavers. [1] https://www.nature.com/articles/s41396-022-01284-x https://www.nature.com/articles/s41396-022-01284-x