### Clue: Particular stuff in the veins, look, strange occurring in the chest (9)
### Answer: BLOOD-DUST 
 ### Explanation: Definition: Particular stuff in the veins
LO ODD in BUST. Blood-dust is haemoconia, or "small colourless granules in the blood", so "particular" in the definition means "consisting of particles" (not explicitly given in Chambers)