| 摘要 |
A mask (10) is disclosed including a cone-shaped cover (11) and an envelope (20) positioned on the envelope (11). The envelope (20) contains a mass of absorbant material (25) which is saturated with an odor-masking substance (26). One embodiment of the invention includes an inside seal (28) and an outside seal (29). By removing both seals air is permitted to be drawn directly through envelope (20) where it mixes with the odor-masking substance (26) and is drawn into the mask. Another embodiment of the invention includes an envelope (50) having a face (52b) perforated with a plurality of apertures (56). The face (52b) is overlaid with a seal (60) which is removed when the mask is used. The odor-masking substance (55) is drawn through apertures (56), mixes with air and is drawn back through the mask (40).
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