I’ve never heard of it, and I remember once your mother saying that…. but remember in those days the three of them lived up there all summer with Alice, and grandfather got off the train from NYC somewhere past Millerton and HIKED back up to the top of the mtn!!!! I don’t know if he wore any kind of facial protection, probably not because I’m pretty sure they weren’t yet aware of little microbes and bugs and etc….. remember the three kids were very much kids at that time, maybe Carrie was a teenager, my father was an awkward pre-teen, and then Alice was still a kid……they were up there all summer, and played with the folks from the Upper Lake and the Wells…..