How long can a cigarette remain unopened under normal circumstances?

Unopened cigarettes can be kept for about two years under normal circumstances.

According to the professional knowledge and experience of tobacco industry, an unopened cigarette can be stored for about two years under proper storage conditions, such as cool, dry, avoiding direct sunlight and humid environment. This is because with the passage of time, the chemical composition in tobacco will change, resulting in changes in the quality and taste of tobacco. However, the specific shelf life will also be affected by tobacco types, preservation environment, packaging and other factors. Some special tobacco, such as cigars and pipe tobacco, can be preserved for years or even decades if properly preserved. This is because these tobaccos have a longer shelf life after special processing and fermentation.