In Korean tradition, dreaming of moths and flies is read as inauspicious. It is most often tied to 전반, 건강.
Moths, mosquitoes and flies are nagging people and small worries. Swarming was read as petty irritations; driving them off, relief.
Tradition reads the symbol as an omen; psychology reads the same dream as a mirror of your present state. Describe your dream and both readings appear together. Interpret your dream