Can kidney cancer be transmitted by eating together in the late stage?

Can kidney cancer be transmitted by sharing food? The definite answer is: No, to be exact, cancer is not contagious. So far, it can be said with certainty that cancer is not contagious. The so-called contagion, in simple terms, is the transmission of a disease from one person to another through some means.

Infection requires three conditions: a source of infection, a route of transmission, and a susceptible population. Clinical data show that cancer patients themselves are not a source of infection.
Lung cancer is a malignant tumor caused by the abnormal proliferation of local cells and the loss of normal cell morphology and dynamics under the action of various carcinogenic factors. Cancer cells discharged through sputum rapidly degenerate and die due to the evaporation of sputum water. Even fresh sputum requires various nutrients and specific conditions for cancer cells to grow and reproduce in vitro.
Scientists often have to go through a lot of trouble to successfully cultivate a living cancer cell, so cancer is not contagious. In animal experiments, tumor-bearing animals are kept together with non-tumor-bearing animals for a long time, and no direct transmission has been found. In some families, multiple people have lung cancer or other tumors one after another. This may be related to the fact that family members share the same genes and they may be in the same carcinogenic environment.