Part 4 - breaking down transmission through filter materials.
Pass through. With sufficient Negative pressure (Breathing in) the moisure particle containing the Rona will be accelerated enough that the moisture will contort from a sphere shape, to a cylinder to pass through the medium and then resume its sphere shape after passing through, still locking the Rona within its skin. That particle then completes its journey to the lungs. If the lungs capture the particle containing the Rona, the Rona now has a breeding ground to replicate.