Could always request that the person puts his/her accusation in writing. Might give them pause for thought.
Yes that will work, but why not make them bet a months pay on the outcome of the breath test?
America West pilots' "accusers" should have done it and receive the "accused" yearly salaries as a bonus.
Have breathalysers installed at the airports for the pilots as a mandatory item to be cleared through security.
This way everyone is safe.