Can you beat a breathalyzer test by sucking on a penny before (or maybe while) you blow?

One of my friends told me that he did.
Update: There are at least 3 kinds of breathalyzers according to howstuffworks. Maybe there's some metal in the penny that either absorbs something the breathalyzer detects, or reacts with something in the mouth releasing some gas that somehow hides the alcohol or confuses the machine.
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