How is HIV not passed on? Expand HIV is not easily passed on. HIV cannot pass through unbroken skin and is normally spread by unprotected sex. HIV cannot get through unbroken skin so there is no risk of passing on HIV from casual social contact. The virus cannot be passed on from: tears sweat saliva urine or faeces This means you cannot get HIV from toilets seats, kissing, shaking hands, hugging or sharing cutlery and you cannot get HIV from mosquitos.