I try to keep it a secret as much as possible. My parents, brother and best friend knows. But I've asked them all not to tell people.
I do ASMR which is already so misunderstood, I feel if people find it and don't know what it is they'll just be annoying about it.
But I am at the point where I care a lot less. I love doing it and in the end that's all that matters.
Though if I was still in school I would probably be more worried too. I'm at an age where I would at least hope people are mature enough to not comment on it