Phlegm

Sneezing can project mucous up to 10 feet away with micro-aerosol that stays in the air for 1 hour. Coughing 30 minutes. Talking 6 minutes. Micro-aerosols are dangerous because they are not filtered by the mucous membranes and can go straight the the alveoli in the lungs.
Of the microbes that are spit out, only 4% are pathogenic.