Visible crew/equipment: When the O'Grady mob are fighting the Angels, Alex turns off the lights. Just after they flip over the men, you can easily see the harnesses at the top of the screen. (00:54:25)
Visible crew/equipment: When Bosley is a crossing guard and is yelling 'Stop' at the oncoming car, lighting equipment is seen reflected in his glasses. It can also be seen reflected in the cars after the children have crossed. (01:10:40)
Visible crew/equipment: As the Angels are all hanging on the blue car that Madison is driving in the end, you can briefly see the small hook at Lucy's stomach, that was keeping her secure. (01:31:45)
Visible crew/equipment: When the Angels are racing in the "Coal Bowl" we can see a camera on top of the bridge structure. Watch for a wide angle shot and you can see the camera moving at the same speed as the dirt bikes, at the very top of the screen.
Answer: It's just a gruesome quirk. Every person has their own scent. He's savoring the moment of his kills.
raywest ★