Being serious now, slight coolant leak spraying onto the cylinder head or exhaust manifold smells a bit, but I think you may have already identified the source.
Leaky fluids from the dishwasher, while a quick clean may seem to have sorted matters on the day if the stuff has soaked into the carpet and possibly further you are going to have to give it more than a quick wipe. I got the carpets in Truck wet once (sans fullbrooke ford). Despite a good clean and dry out the smell from the damp carpets lasted weeks.
This posting may have been helpfull, on the other hand probably not... Either way, I may have had drink when posting it in which case it's probably not as helpfull as it could have been
Work safe, and remember all technical problems can be resolved with a hammer, the trick is knowing where to hit it and how big a hammer to use (I often find it may also help to have a spare bit in the shed to replace the bit you have just mullered

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