Different methods of formation create respiratory droplets of different size and initial speed, which affect their transport, fate in the air and also interaction with other particles of non-biological origin in the air, which are more numerous than them.
Different methods of formation create droplets of different size and initial speed, which affect their transport and fate in the air. Respiratory droplets can also interact with other particles of non-biological origin in the air, which are more numerous than them. 
