| 摘要 |
This invention relates to a containment member matably assembled within a substantially cylindrical housing having therewithin a mass of filtering material such as water-reactive, expansible fibrous material and at least one frangible body having a liquid content, both of said containment member and said housing being made of resilient, impervious materials of the type generally designated as plastics, and each having one end open and at the opposite end an integral disc having multiple perforations for the passage of smoke therethrough.
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