Food hygiene and safety is one of the important factors to protect human health. Unclean food will bring bacteria, viruses, parasites and other pathogenic microorganisms and toxins, which may endanger human health. Therefore, the processing, production and preservation of food should follow scientific hygiene standards to ensure the hygiene and safety of food.
Of course, not all bacteria and microorganisms are harmful to human body, and some are even beneficial. For example, some flora in the intestine is helpful to the human body. However, if the food is not clean, some harmful bacteria and viruses may be ingested when eating, which may lead to health problems such as gastrointestinal discomfort and infection.
To sum up, it is unscientific to say that you are not clean and sick after eating. It is necessary to ensure the hygiene and safety of food, pay attention to the processing and preservation of food, and avoid health problems caused by unsanitary food.