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Old 2nd May 2009, 15:01
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Storminnorm
 
Join Date: Dec 2007
Location: Southeast U K
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Yup, they're right.
Air re-circs from cabin via mixer chamber up again to top of cabin.
Germs enjoy a nice round trip. Several times.
Switching off re-circ fans won't make any difference.
Recommend SCUBA gear. And a good wash after.
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