Witnessing flies in your dream realm may be symbolic of impurities or disturbances, whether they manifest physically or emotionally. This buzzing imagery can point towards lingering guilt or the crumbling of well-laid plans. Additionally, the presence of flies could be a harbinger of illness, spreading with stealthy contagion. On another note, these persistent creatures might be reflecting the characteristics of someone in your waking life who is irksome and intrusive, drawing boundaries that need to be respected.