Originally Posted by DirtPedalerB
That sounds like borderline paranoia. Unless of course you have some vasoline and lasers around the house, which is just weird.
Doesn't everyone have some vasoline?
As for lasers, a simple laser pointer will do. Just shine it through... tangentially cutting across the cross section of the CF to see how deep a gouge or crack actually is. You should see a marked refraction at the surfaces of the notch.