You are on my ignore list, but since you seem to be following me around, I have made an exception and tried to answer your question.
I believe that Fluid from a dead body(especially if dead for weeks)
would be cadaver fluids and scent not blood from a person living at the time of the blood loss.
Some info........................................
does a dead body bleed?
Only if it punctured where the blood has settled. Once the heart stops beating, blood settles due to gravity. So, for instance. If someone died in a vertical position (on a cross) and was stabbed in the side, there would not be "blood and water." This person would have to have been stabbed in the legs for there to be blood to flow.
This answer is only partially right. It is correct about "bleeding," but it then goes off to answer a different question: could "blood and water" have come out when a figure (like Jesus) who died on the cross is pierced "in the side."
A better answer that avoids getting into the issue of Jesus' death is:
http://wiki.answers.com/Q/Do_dead_people_bleed?#slide=1 It is true that after death there would be no bleeding, but there may be other fluids that resemble blood in a dead body. One such fluid is called "purge." "Purge from the mouth and nose usually originates in either the stomach or lungs, or both. The color of the purge will usually identify its origin. For instance, stomach purge usually is yellow to brown and can be semi-solid. Lung purge will usually be red to rust brown in color with a foamy texture. "
http://www.iccfa.com/reading/2000-2009/embalming-z-purge This fluid may even come out after the body has been taken to the funeral home, so it lasts longer than the time blood stays liquid.
Another possibility is pleurisy - inflamation of the sack around the heart & lungs. Pleurisy may result from the accumulation of fluid, possibly blood. Pleurisy may result from trauma to the chest such as blunt trauma or a puncture.
http://health.wikinut.com/Diseases-Of-The-Pleura%3A-Dry-Or-Fibrinous-Pleurisy-And-Pleural-Shock/35gq7nj2/ Acute pericardial effusion may also occur with tachycardia.
http://www.patient.co.uk/doctor/acute-pericarditis Hypovolemic shock results from a loss of blood (leading to low blood pressure) or other fluids (dehydration). Blood pressure drops. Vascular fluid loss may be the result of internal bleeding. Blood may leak into any body cavity or space such as the lungs, or the pericardial area. Loss of consciousness (fainting) can result from hypovolemic shock.
http://www.healthline.com/health/hypovolemic-shock - - -