Half a croissant, on a plate, with a sign in front of it saying '50c'
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SBD Warning System

Fart detector warning system
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Ever get stuck in an elevator with an 'offender'? Time to add a fart detector that sounds a warning and opens the doors at the next available opportunity, giving occupants an escape route. Fart detectors have been around novelty shops for a decade and more; time to put 'em to practical use.
Steamboat, Sep 13 2015

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