A video of a boy screaming in pain after consuming a ‘smoking’ biscuit that went viral has led to the Food Safety department issuing an order on the use of liquid nitrogen.
Vendors infuse food (biscuits usually) with liquid nitrogen which produces smoke when it vapourises.
The boiling point of liquid nitrogen is around –196 degrees C. An ice cream one consumes is around 0 to –4 degrees C.
Liquid nitrogen can scorch the organ or part of the body it contacts, making it appear like frost bites.
If it reaches the stomach, the organ could get perforated. In the lungs, it could produce CO2 and the person could become unconscious.