Energy bars generally refer to snacks or nutritional supplements containing high energy. It is usually composed of grains, nuts, honey, dried fruits and other ingredients, and is rich in nutrients such as protein, fiber and vitamins.

Energy bars generally don't smoke. It is made of dry ingredients and contains no flame or combustible substances. The main purpose of energy bars is to provide energy and nutritional supplements for people to eat when they exercise or need to consume energy for a long time.

However, if the energy bar has flame or smoke, it may be due to abnormal or abnormal conditions, such as damage or pollution during storage or manufacturing. In this case, it is suggested not to continue to use the energy bar, and contact the manufacturer or relevant health supervision department as soon as possible for further guidance.

To sum up, generally speaking, energy bars do not smoke, and energy bars may have abnormal conditions and should be banned from eating.