Not sure if this is EE, Tech or OT

 Before I spend an exorbitant AU$9.99 and take an Airwick(tm) odour=20
detecting device apart, does anyone on the list know what type of sensor it=
=20
might use to perform this feat?

I thought possibly a gas sensor, or maybe an O2, I doubt that they would be=
=20
using a laboratory sensor that is tuned to certain molecules (at that=20
price). How would it know the difference between smelly flowers or burnt=20
carbonised food? I know there are sensors that can detect keytones and=20
esthers and used in wine production, but again I reckon the price would be=
=20
out of the reach Reckitt and Colman/Benckiser even at volume.




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cdb,   31/12/2011
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--




colin@btech-online.co.uk

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