Subtle aroma of yucky tinned meat.
...Nothing worse than
that smell wafting from a dirty fry pan over a semi-smoldering lump of coals that used to be your campfire, whilst you lay in a crumpled pile of V.B. cans ...using a [punctured] wine bladder for a pillow.
All this on day two of a five-day "boys week away *fishing"...
...Aaah, those were the days.
*The term 'fishing' does not necessarily imply any involvement in the catching of fish