It is generally believed that wormwood and Acorus calamus can drive away snakes, insects, bacteria, poison and evil spirits. Some people are used to bathing or fumigating wormwood with boiling water in their rooms during the Dragon Boat Festival. However, people with allergic rhinitis, asthma and other respiratory diseases are not suitable for smoking mugwort leaves indoors, otherwise it may aggravate the condition.
Extended data
Since ancient times, our country has the custom of hanging mugwort leaves, hanging calamus, sprinkling realgar and bathing mugwort leaves, especially in many areas, newborns and parturients should also bathe with mugwort leaves.
Wormwood bath, bathing with wormwood is a thousand-year custom, which is recorded in medical books. "wormwood bath" has the effects of dispelling cold, dehumidifying, sterilizing, relieving itching, moistening skin, promoting blood circulation and dredging collaterals, so there is also a proverb that "wormwood bath is good for one year". It is difficult to buy fresh wormwood in Hong Kong now.