If my grandmother has esophageal cancer and kisses my baby, will it be contagious?

If my grandma has esophageal cancer, will it be contagious to my baby? Since esophageal cancer is one of the most common tumors, many people are afraid of contracting this disease. Can saliva of esophageal cancer be contagious? I believe this is a question many people have, so I will give you a detailed introduction.

Since esophageal cancer is one of the most common tumors, many people are afraid of contracting this disease. Is saliva contagious? I believe this is a question many people have, so I will give you a detailed introduction:
Infection is the spread of a disease from one person to another through some means. Infection must meet three conditions: the source of infection, the route of transmission and the susceptible population. Clinical data proves that cancer patients themselves are not the source of infection.
Experts have conducted experiments in which cancerous tissues removed from cancer patients were directly implanted in another person and could not survive and grow. Although it is currently believed that the occurrence of certain cancers is related to certain viruses, such as cervical cancer, nasopharyngeal cancer, and leukemia, it has not yet been confirmed that infection with certain viruses will lead to certain cancers.
At present, the World Health Organization has not listed cancer as an infectious disease, and no isolation measures are taken for cancer patients as for infectious diseases. The cancer incidence rate of medical staff in cancer hospitals is not higher than that of the general population. Animal experiments have verified that when cancerous animals are kept together with healthy animals for a long time, no infection is found after repeated observation and examination.