Table 9.

Showing different types of aerosols and droplets and their significance [141].

Droplet Type	Description
Splatter droplets	Particle size ≥ 50 µm, briefly airborne, and spread by close contact (typically within 1 m) with the host.
Aerosols	Particle size < 50 µm, carry viable pathogens, remain airborne for prolonged period, and spread to distant surfaces.
Droplets > 5 µm	Remain in the upper respiratory tract.
Droplets ≤ 5 µm	Might be inhaled into the lower respiratory tract.
Droplets ≤ 1 µm	Can enter alveoli.