If you have an e-nose, you probably have an e-ears too

Could hear the flow of the current from a power supply comming in to your computer, the noise of your graphic card chip heeting the cooler (while playing solitaire 2101!?).
Get back to reality, there are sensors that can do this (or someting like it), but they are not so small and portable to be worn on a wrist or just put in in an ear, or on nose.