It may simply be coincidence, but there may be something more sinister at play.
About 3 weeks ago, I ran out of facial cleanser, so I bought some. That weekend I stayed at the Marriott Courtyard right next to La Guardia. When I checked out, my facial cleanser did not.
I replaced the facial cleanser. This weekend I stayed at the Embassy Suites adjacent to the Portland International Jetport. Once again, the facial cleanser stayed behind.
The big test is this weekend and the following. I have acquired new facial cleanser. This weekend I am staying at the Holiday Inn at Reliant Park in Houston -- nowhere near an airport! And the following weekend I will be staying one night at the Two Trees Inn at Foxwoods and the following night at Mohegan Sun -- again, no airport! If I still have facial cleanser after these next two weekends, we know that it is the combination of hotel and airport that proves deadly to my face's radiant cleanliness.
Or, maybe it's just coincidence.