AIDS is not contagious when you eat, and you will not be infected if you eat with AIDS patients. At present, the most important ways of AIDS transmission are blood transmission, sexual contact transmission and vertical transmission from mother to child. There are also some other ways of transmission, such as irregular tooth extraction, tattoo, pedicure, injection in irregular medical places, and sharing injection needles. Shaking hands, hugging, talking to someone with AIDS, and riding in a common vehicle are not contagious. At present, AIDS is also controllable, and most AIDS patients are stable after regular antiretroviral treatment, so there is no need to worry too much.