Liquid nitrogen is kept within insulated containers and has to be handled with care. It is used in medical environments such as cryotherapy to remove unwanted skin, such as warts, moles ...

The other harmful reactions of nitrogen in human body are headache, stomach ache, acidity, perioral inflammation (pink patches around the mouth), swelling of lips and tongue, and skin allergies ...

Nitrogen makes up about 78% of the Earth's atmosphere. Liquid nitrogen is very cold, so it is often used to freeze food. The boiling point of nitrogen is −196 °C, so liquid nitrogen is very ...