Ask if you are unsure. Although the risks are very small you should avoid sharing toothbrushes and razors. In the UK you cannot become infected by HIV when donating blood because equipment is new, packaged sterile and used only once. The virus cannot be passed on through touching, shaking hands or hugging. HIV cannot be passed on by sneezing or coughing.
Swimming pools are safe too.
HIV is not known to be passed on through tears and sweat. You cannot be infected with HIV by mosquitoes and other insects. A doctor or nurse will take a sample of blood and send it to a laboratory for the HIV antibody test. Your result and the fact that you have been tested is confidential and the results will only be given to you in person. A negative result means that antibodies to HIV have not been found in your blood.