Question

what are the main hizard of wool industry

Answer 1

its fibers can cause lung cancer
or fibers of wool get stuck in alveolies

Answer 2

The main hazard of the woll industry is the chance of getting infected by $\bf{anthrax bacterium}$

This bacteria actually causes a fatal blood disease called $\bf{sorter's}$ disease.

This is an occupational hazard.