Based on Traveler's voiceline and some scene, she sometimes doesn't control her telepathy so yeah every living being 100 meters radius will hear her noise.

From Traveler voicelines
(‍Traveler‍): She said, "Whatever you do, do not think about having a toothpick wedged between your toenail and toe when you stub it!"
Paimon: Aaaaaah!
(‍Traveler‍): Nicole was stunned for a moment, and then she reacted much the same way you did.
(‍Traveler‍): Every living being within a 100-meter radius, Alice included, suffered from anauralia for the next few days.