I've been guilty of this myself I went backpacking in the Superstition Wilderness and hopped a flight back to Los Angeles. I couldn't find a place to get a shower near the airport. I cleaned myself up as best I could at the airport bathroom and caked on the deodorant, but I apparently didn't do an adequate job. The lady next to me on the flight turned on my air full blast. I felt quite embarrassed.

It is a real challenge finding a place to shower in civilization. If you have status, some airport lounges have showers, but not all. Even if they do have one, you are not guaranteed a spot. You can buy access, but it is almost as much as paying for a hotel room just to use the shower. Does anyone else have pointers on finding a shower from afar? I know of places in my normal stomping ground in the Sierra, but finding places online is a challenge.