Starfleet Innotech Inc (SFIO)

[good_drama]

Do you hear a whoosh sound at all? You should hear it each time you inhale.
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I am not hearing a "whoosh" sound when inhaling...I am feeling a slight buzz, but it is hard to tell if it's working properly because there is no sound, no vapor, etc.
So, other than a "buzz," how does one know if the unit is working the way it is supposed to.
I am very long the stock and would feel better if i understood how others knew for certain that it is doing what it is supposed to do.