Smoking moxa for a shorter period of time and igniting a smaller quantity will generally not cause harm to the human body; if you smoke moxa in the house for too long or ignite a large amount of moxa at one time, it may cause harm to the human body.
Smoking mugwort will produce carbon monoxide and other chemicals and some particulate matter, if it can not be discharged to the outside of the house in a timely manner, inhaled into the human body will stimulate the human respiratory tract, the human respiratory system to cause some harm. Therefore, in the house smoked mugwort to maintain indoor air circulation, try not to ignite too much mugwort, and burning time should not be too long.
If you have a cough and other symptoms when smoking mugwort, you should immediately consult a doctor for examination and standardized treatment under the guidance of a professional physician.