Bacteria just eat what they can, (some) emit antibiotics to kill other bacteria and (some) emit own excrement that can be poisous. We dont know what kind of ge

Bacteria just eat what they can, (some) emit antibiotics to kill other bacteria and (some) emit own excrement that can be poisous. We dont know what kind of genetic material those hypoyhetical aliens have. Also didt South America die to smallpox? Btw. I never wrote about viruses.