I was fortunate when in Viet Nam. I encountered only one real true REMF - our boats seldom came around them.
I had hopped a Huey to get to the HQ at Long Bien for my (voluntary) extension leave. To get from my boat to the pad I had to wade through a freshly fertilized rice paddy.
When I found the right office there was a line out the door of the building. Air conditioned buildings, starched jungle fatigues and waxed floors - I patiently waited in line. The troop ahead of me sniffed the air and decided to try again later. I moved up. Every guy in line did the same thing. I was soon in front of this clerk’s desk.
He sniffed the air and decided to take a break.
“Go ahead, I’ll just wait in you chair with my boots on your desk.”
He typed up my going home orders quicker than I had ever seen a typewriter work before.
That paddy muck came in handy.
Heh heh...there's nothing quite like "field smell" to clear a path back in the "civilized" portions of the world...