AIDS is a clinically common sexually transmitted disease caused by HIV infection. The HIV virus is not active in the air, the HIV virus is very poorly resistant to the outside environment and tends to inactivate and lose its activity very quickly after leaving the body. HIV is mainly found in the blood, semen, vaginal secretions, chest and abdominal fluids, breast milk and cerebrospinal fluid of HIV-infected patients, but not in the sweat, saliva or urine of HIV patients. Therefore, normal daily contact with AIDS patients is not contagious, and swimming with AIDS patients is also not contagious, so there is no contagious situation via washing machine.