The tobacco warehouse can be ventilated with windows. Is it poisonous?

According to the tobacco network query, the tobacco warehouse can open the window for ventilation and is non-toxic. Tobacco warehouse should be opened and ventilated frequently. Ventilation time should be placed in the morning and evening when the temperature is low, once in the morning and once in the evening, and each ventilation time should be not less than half an hour. Carbon monoxide, nicotine and tar are harmful to human body only when tobacco leaves are burned, and they are not toxic before burning.