Cherry red colour of blood is seen in poisoning with
Colour of death by poisoning: Cyanide- bright red Carbon monoxide - cherry red Carbon dioxide- deep blue Phosphorus, copper- dark brown Hydrogen sulphide- bluish green Opiates- black Nitrite, aniline, potassium chlorate, nitrobenzene, potassium bicarbonate- chocolate brown or coffee brown. Ref: FORENSIC MEDICINE AND TOXICOLOGY DR P C IGNATIUS THIRD EDITION PAGE 24
Nitrate
Cyanide
Lead
Sulphite
Death and postmortem changes