A. Dead animals will smell until they are completely decomposed or until they are dried out, whichever comes first. It goes without saying that the larger the animal, the more biomass there is to rot, the stronger the smell will be, and the longer the smell will last.
When cells are damaged by disease or injury, large amounts of these leak out, causing blood tests to show that enzymes are elevated above normal. (You can roughly compare this situation to a car that's leaking oil. Leaks in many parts of the engine can have the same result: oil all over your driveway.)
Serum analysis for other common causes of neuropathy, including hemoglobin A1c (HbA1c) and fasting glucose to rule out diabetes, thyroid function tests, B-12 and folate, and rapid plasma reagent (RPR). CSF analysis can show high protein levels (>50 mg) in a small percentage of patients.