Effect of including circumstellar dust around the cooler component in the two-star solution for the observed Mothra SED. Two fits have been conducted for the SEDs, corresponding to epoch 1 (left) and epoch 3 (right), considering the variability of the cooler component. In the fits presented, the effective temperature and luminosity of the cooler component are both allowed to vary between the epochs. As seen, significant circumstellar extinction (here A_V = 2.8 mag) allows for good fits to the SEDs of both epochs while keeping L_hot/L_cool < 1.