Protective Mask (FFP2 NR) can not only prevent respiratory infectious diseases but also prevent allergies or avoid inhaling a large number of harmful substances. However, when choosing masks, you should pay attention to medical masks with protective effects.

1. Prevention of respiratory infectious diseases: diseases such as colds, pneumonia, new crowns, and tuberculosis can all be spread by droplets. Wearing masks can prevent diseases and filter some bacteria and viruses;

2. Prevention of allergies: Frequent contact with pollen, dust, etc. in life. After these substances come into contact with the facial and nasal mucosa, for allergic people, it will cause mucosal hyperplasia, edema, sneezing, runny nose, skin itching, and other allergic symptoms. Wearing a mask can avoid contact with allergens and play a role in preventing allergies;

3. Others: such as smog, second-hand smoke, etc., smog will affect the human respiratory system, cardiovascular system, etc. Wearing a mask can filter harmful substances in the air and prevent them from entering the respiratory tract. The smoke exhaled by people around you when smoking, that is, second-hand smoke, also contains nicotine, tar, and other substances, which can cause harm to the human body after inhalation. Wearing a mask can prevent these harmful substances from entering the body.