First, a Channel Mixer layer, with the "Monochrome" box checked, with these values:
Red 0
Green +50
Blue +50
At this point, the whole image will be black-and-white.
Then a Levels layer, clipped to the CM layer, with these values:
Red 0/2.20/240 and 0/255
Green 0/1.10/255 and 0/245
Blue 0/1.00/255 and 0/225
At this point, the whole photo will be weirdly reddish.
Then click on the mask of the Channel Mixer layer, and invert it to black. Then paint on the problem areas.
No.