Based on the community answer, this kind of yellow-green cast is most consistent with the lighting in the original scene rather than a camera, film-storage, or processing fault. Fluorescent light often produces a yellow/green cast because its spectrum is uneven, and that can show up strongly in scans.

If the affected frames were shot under fluorescent or mixed lighting, the scan may look green/yellow even if exposure and development were otherwise fine. In that case, the fix is usually simple color correction in your editor or scanner software.

So the most likely cause here is the light source used when the photo was taken, not the camera itself.