Cigarette is or comprises tobacco pre-treated with an aqueous mixture of boric acid or its salts, preferably sodium perborate or tetraborate, to give less harmful smoke and reduced likelihood of damage if not put out properly.
Cigarette is or comprises tobacco pre-treated with an aqueous mixture of boric acid or its salts, preferably sodium perborate or tetraborate, to give less harmful smoke and reduced likelihood of damage if not put out properly.