With inkjet prints there are occasional spots where the surface flecked off leaving a small white spot. While this happens rarely it usually happens on a larger print.
I guess that is just Murphey doing a really fine job of it!
To fix this problem I use the standard photo retouching methodology...
Marshalls photo retouching dyes take well on pigment inkjet prints and I find that all in all it works fine.
I have a 00000 (5 ought) brush with half the hairs carefully trimmed out and I use a pair of strong magnifying glasses. It is critical that you can see the work magnified.
I have all the colors of the dye dried in the compartments of a plastic palette. I put a few drops of water in the center and dip from the dried color spots to make an even small dot of water with my color match in it.
I test on a piece of the material I am retouching and wear a nylon glove on my left hand so I can touch the work freely.
I try to fill the white spot without overlapping the edges with a medium wet brush. I look for the brush to make a consistant line when gently stroked on the test sheet. If you touch it and it leaves a drop it is too wet and if it wont make a short consistant line it is too dry.
I want the brush to deliver dye the first time I go at a spot amd I may gently touch the sopt several times to make dots that fill it in rather then swabbing at it. Swabbing at the spot is death, you want to fill it with small several gently overlapping dots.
Like anything this is a skill and takes practice.
I would recommend that you make a black file in photoshop with some small white dots and practice on a printout. After you have done 20 or 30 you will get the hang of if and be spotting away...
A big part of success is the few hair brush and the magnifyer so you can really see the spot.
I was fortunate enough to have been able to get some training in retouching in the 70’s and although everything has gotten much better I still find spotting to be a useful abilitiy.
Now those Adams vibrating pencil retouch stations for negatives... Mine perished in a fire and I would much rather photoshop the face thank you :)
But those damn occasional flecks!
Actually we have it easy now because an absolutely clean wet photo print was rare if you were a critical worker, it seemed like everything needed a little touch.
Now I spot my dust once and it is gone-gone-gone and life is good!