(2) Spread plastic sheets on the dining table: it is easy to accumulate dust, bacteria and other sundries, and most of the plastic sheets are free monomer vinyl chloride resin. Tableware and food are often exposed to this harmful substance, which is easy to cause chronic poisoning.
(3) The cup that drinks tea for a long time is not washed for a long time: Some people think that the tea rust on the cup is accumulated by sterilized tea and is not dirty. In fact, tea rust contains a variety of harmful substances, which can cause pathological changes in organs such as kidney, liver and stomach, and even tissue necrosis.
(4) Cover the food with a gauze mask to prevent flies: If flies stay on the gauze mask, it is inevitable that they will not leave the eggs of germs and fall down from the pores to pollute the food.
(5) Brown rust in aluminum pot needs to be removed frequently: the dark brown rust produced in aluminum pot is actually like a film, which prevents aluminum from easily dissolving in water, thus reducing the absorption of aluminum by human body.