Do small flies in kitchen vomit om food?

Yes, small flies, like fruit flies, can vomit on food. When they feed, they regurgitate digestive enzymes onto the surface, which helps break down the food for easier consumption. This process can contaminate the food with bacteria and other pathogens, making it unappetizing and potentially unsafe to eat. It's best to keep food covered and maintain cleanliness in the kitchen to prevent flies from accessing it.