Dhumavati is one the of mahavidyas (Great Wisdoms); she is one of the many aspects of Devi. She acts as the divine smoke screen in the form of old age and death. Only the ardent devotee is able to see beyond the fear of mortality to the Goddess's promise of immortality.
The dhyana mantra of Dhumavati says:Dhumavati is ugly, unsteady, and angry. She is tall and wears dirty clothes. Her ears are ugly and rough, she has long teeth, and her breasts hang down. She has a long nose. She has the form of a widow. She rides in a chariot decorated with the emblem of the crow. Her eyes are fearsome, and her hands tremble. In one hand she holds a winnowing basket, and with the other hand she makes the gesture of conferring boons. Her nature is rude. She is always hungry and thirsty and looks unsatisfied. She likes to create strife, and she is always frightful in appearance.