[VAL] Ammonia smell

["Warren Keuffel" <wkeuffel@xxxxxxxxxxxx>]

When I arrived at home after towing home the '64 Overlander I bought  
in Colorado, my wife and I discovered a strong smell of ammonia in  
the trailer. We have looked high and low and have not been able to  
find any source.

Looking through the list archives, I ran across a mention of ammonia  
in refrigerators (not sure how it is used.) The PO did not tow the  
trailer, just parked it at her daughter's house, so she replaced the  
non-functional RV fridge with a common "dorm" fridge. Could this be  
the problem?

Another possibility that occurred to me was that it could be coming  
from the septic system, but AFAIK the PO used the bathroom in her  
daughter's house and in any event, no one has used the trailer for  
well over a year.

Any ideas out there for what I could look for?

TIA for any help!
Warren