A cigarette designed to reduce the injurious effects on the smoker has one or more channels through it, which are free of tobacco, running from the inside surface of the filter tip to the other end of the cigarette. The channels may be formed of paper formed into a tube which is empty or filled with substance. The material may be of a cellulose containing substance and may incorporate or be impregnated with oxidising substances. Alternatively, the tobacco may contain one or more air impervious bodies which do not burn faster than the tobacco. These bodies may be of the same range of material as the channels mentioned above, e.g. they may or may not empty. The spaces or the bodies may be conical.
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