Fentanyl caused his lungs to fill with liquid. Alveoli filled with liquid cannot participate in gas exchange and this leads to CO2 buildup.Um, no, that is not "likely due to drugs", that is *likely due to having his breathing obstructed*.
Which was due, to anyone with eyes, to him being restrained. Which happens to be the same exact conclusion reached by the medical examiners who've performed the autopsy.
It could also be due to his fentanyl abuse and weak heart (a weak heart can cause edemas).
You still have to explain why he was walking around a few minutes earlier, then died suddenly. Why did he go downhill so suddenly??
