Final answer:
Tuberculoidal disinfectants require special handling due to their ability to kill highly contagious tuberculosis bacteria and their potential harm to human health.
Step-by-step explanation:
Tuberculoidal disinfectants require special handling for several reasons. First, these disinfectants are specifically designed to kill the bacteria that cause tuberculosis. These bacteria can be highly contagious and cause severe illness, so extra precautions are necessary to prevent the spread of infection. Second, tuberculoidal disinfectants are often strong chemicals that can be harmful to human health if not handled properly. Therefore, special protocols and protective equipment must be used when working with these disinfectants.