Generally, fungus can be eaten overnight if it has not spoiled. If deterioration has occurred, it must not be consumed.
In general, overnight fungus, if there is a strange smell, become sticky, color change and other phenomena, it proves that the fungus has deteriorated, has been unable to eat.
Spoiled fungus contains toxins (rice fermentation acid, etc.), its entry into the human body, can be invaded with the blood circulation in a number of organs, not only can cause diarrhea, nausea and vomiting, headache and other symptoms, but also on the liver, kidneys, the brain and other organs to cause damage, serious and even life-threatening.
It is recommended to eat fresh meals, usually according to the daily needs of each person, cooking the right amount of meals, try to avoid eating overnight meals.