| 摘要 |
An apparatus for removing unpleasant odour by means of a first section (10) through which the input gas is constrained to travel and which treats the input gas by exposure to ozone and a second section (11) which converts into oxygen any remaining ozone in the gas stream issuing from the first section. The first and second sections are spaced apart by an interconnecting duct. The ozone is produced from air in the input gas, or alternatively the ozone is produced from air outside the input gas and introduced into the input gas in the first section.
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