There was one trial, which apparently later censored, that measured how mist with similar particle size behaves when it hits a cloth or other non-FFP2 or higher

There was one trial, which apparently later censored, that measured how mist with similar particle size behaves when it hits a cloth or other non-FFP2 or higher mask. Non surprisingly, they do not stop airborne particles that are much smaller than the "holes" in the fabric. The masks captured droplets, but later the droplets dried, split up and became airborne with very small particles.