Could black mold exposure cause hair loss?

The black molds are not typically associated with hair loss. That would be very very unusual. The exception might be an individual who is seriously immunocompromised with widespead infection. Infection with Stachybotrys chartarum or Aspergillus niger  would be theoretically possible to cause a telogen effluvium if one was very unwell with respiratory symptoms, fever and a widespread systemic inflammatory response. Even such a situation would be unlikely to have a long term effect on stem cell populations. All in all it is extremely unlikely that black molds cause hair loss.

Exposure to the black mole should not cause hair loss; however if you get sick from it, sickness can cause hair loss to appear in those with the genes for hair loss