Smoking is not a contraindication to the New Crown vaccine and generally has no significant effect on the effectiveness of the vaccine. However, from a personal health perspective, smoking is not recommended at any time. The immune system will respond rapidly after the vaccination and may experience adverse reactions such as fever, nausea, vomiting, etc. Smoking 3 hours after the vaccination may aggravate the discomfort. Therefore, if you smoke 3 hours after getting the New Crown vaccine, it is recommended to observe for a period of time to see if there is any abdominal pain, fever, rash and other manifestations. On the day of vaccination, avoid getting water on the needle holes and contamination. After vaccination, a light diet is recommended, and those with a history of allergies are advised to avoid allergens. Although smoking does not affect the preventive effect of the vaccine, it is not recommended at any time for the health of yourself and others around you. This is because smoking is not only harmful to your own health, but the spread of smoke can also damage the health of those around you. Cigarettes are not only carcinogenic, but they also cause damage to many organs throughout the body, including the cardiovascular system, respiratory system, and reproductive system, so smoking is not recommended. If you want to smoke in a public place, please go to a smoking room to reduce the impact on others.