Actually, those hairs deter predators. Odds are that's one of the nasties where the hairs break off in your skin and can cause a lot of pain and inflammation.
https://www.poison.org/articles/2014...rpillar-stings
I had a rattler ambush a jay in the dry leaves next to the little-used hike 'n' bike site atop Palomar Mountain years ago. Lots of leaves, six inches deep on the picnic table when I climbed up the little trail to the isolated site. I didn't do anything because at the same time the rest of the jays were scolding something hidden in the brush next to the campsite that was watching me. I left the snake swallowing the jay to go take a shower and attend the campfire program, but did a good search of the site when I got back to make sure it was gone. Hopefully whatever was in the brush was just a raccoon or coyote, and not a mountain lion, but it never made another appearance.