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The FDA told CNN that the agency doesnt comment on specific studies, but evaluates them as part of the body of evidence to further our understanding about a particular issue and assist in our mission to protect public health. The FDA is reviewing the findings of the paper, said FDA press officer Alison Hunt via email.

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Austin Air HealthMate Plus HM450 Best Amazon AU Pick for Tobacco Smoke Pros 6.3kg carbon + zeolite largest carbon load of any residential unit available in Australia Zeolite component specifically adsorbs ammonia compounds dominant in tobacco smoke Single filter replacement every 5 years (~$250) lowest running cost on this list Available on Amazon AU with fast Prime delivery Cons No smart features, no display, no air quality sensors purely mechanical operation Aesthetic is industrial will not suit all living spaces Honest coverage at 6 ACH for smoking rooms is approximately 50m not suitable for large open-plan areas The Austin Air HealthMate Plus is the unit that clinicians in US smoking cessation research reference when recommending residential filtration for tobacco smoke environments

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