How can hiv/aids be transmitted from one person to another without having any form of sexual contact, and why?

Blood exchanges, notably through a syringe (sharing injecting equipment when injecting drugs, accidental bite from a health professional, blood transfusion before 1985)
Transmission from mother to child during pregnancy or breastfeeding.

There are only four liquid contaminants:

     -The blood,
    - The sperm and the fluid that occurs before ejaculation (pre-seminal fluid)
     -The Vaginal secretions
    - Breast milk.

There is a lot of things if u give me the list i can

True. the more you know, the better of you will be.