film - Green Fog in Color Negative Scan

Can anyone explain what is wrong with this negative scan?

There seems to be some green haze in my scans. At first I thought the green tint was just from the lab not color correcting the scans properly, but it's more than just a color tint, there's some real fogging too.

The film is Cinestill 50D, this is my first time playing with this stuff.

Some example scans:

And a photograph of the negative on the light table:

Hypothesis:

• Green tint is from poor scan job but the fog is because negatives were underexposed.

All my other films done with the same camera and meter are correctly exposed, why would this one be any different? Plus, the negative itself looks dense. If anything, it's overexposed for the second shot.

• Green fog comes from light leaks in the camera.

All my other films done with the same camera don't have this problem.

• Green fog comes from carry-on x-ray at the airport.

This film is an ISO 50 film, so this seems unlikely, however maybe the cine emulsion is more sensitive to x-rays compared to normal photography emulsions?

• Green fog comes from poor scan job itself.

I looked at the negative under the light table, honestly, I can't tell.

So, what is it?