Spots mountain Laurels
This is a type of leaf spot disease.
We recommend picking off affected leaves and putting them in the trash.
Selectively prune so that air flow is improved.
Regular mountain laurel, Kalmia latifolia, is deer resistant, but special hybrids may not be.
If by chance you have cherry laurel as opposed to mountain laurel, they are on the "seldom damaged" list.
Of course, if they are hungry enough, deer will eat anything.