Re "what to do" with the funk on the trail. This may sound odd, but something to consider is your diet. I don't say this to be funny, or mean spirited, but my wife had the most foul smelling feet I have ever been remotely close to. Her shoes were rotten smelling and my stomach would turn if, after backpacking or other physical activity, she crawled in the tent or van bed without washing them first.
After our child was born, we decided to switch over to a diet of 100% organically grown food. Having given it no thought, within 6-10 months, I just happened to notice that a growth on my toe, that had been there for 20 years, had literally disappeared...as had a wart on my hand. I asked a Dermatologist about this as well as four different Dr friends we knew from outdoor activities. They all had the same thing to say: for some reason, my immune system had gotten better. Around the same time, I also noticed that my underarm odor had changed for the better, and my mouth tasted fresher....and, the odor that my wife's feet had was virtually non-existent. They remain that way 9 yrs later too.
Had it just been me that had undergone these changes, I may not have made any connection to our diet. However, considering my wife's odor disappearance, and the timing of everything, I believe this is more than a coincidence. Whether it is fewer chemical residues on the food, a different make-up of the nutrients or structure, or a combination of those, I don't know. However, I do believe these changes took place due to our diet change. At the time, we made no other changes in our diet or lifestyle.
Something to ponder.......