Yes, even I, who rarely if ever gives a thought to food poisoning, and who is about to eat some cold stewed rhubarb with clear mould growth on top, would play safe when it came to recycling a marinade in which raw meat had rested for some time ...
Cooked marinade (for pre-cooked chicken), I leave in my 'fridge and re-use without giving it a second thought; tikka marinade (yoghurt) in which I have marinaded raw chicken, I would either re-use immediately or pour down the sink.
** Phil.