Unlike the related Bad Omen effect which when obtained naturally does not make the player give off potion particles, the Hero of the Village effect makes players give off potion particles for the good 40 minutes that you have the effect, which is inconsistent with the Bad Omen effect and distracting as the potion particles are notorious for being annoying as they fly in front of the camera.
Linked issues
relates to 1
Comments 6
Bad omen doesn't emit particles when applied from illagers, while hero of the village does (when completing a raid). The bad omen does give particles when given by commands, but the particles are dark green (probably because they're not supposed to be seen). This report is talking about these effects being applied naturally.
All effects make the player give off particles, including Bad Omen.