Many types of food poisoning are contagious. You usually get food poisoning from eating food contaminated with bacteria, viruses, or parasites. However, if you have food poisoning it is possible to pass those germs to someone else. Some of the most common types that are contagious are salmonella, E. coli, and norovirus. When you have food poisoning, your vomit and feces is full of these germs.
That’s why it’s so important to disinfect areas that may be contaminated. For instance, if any bacteria remain, someone could come along, touch that area, put their fingers near their mouth and end up with symptoms of food poisoning.