Possible human alveoli to alveoli transmission mechanism for Covid-19 under quiet normal breathing conditions

SARS-CoV-2 aerosols mean lifetime is compared to the one we measured for B. thuringiensis spores in micron-sized aerosols in our Counterfog Fog-Dynamics-Laboratory in Madrid. Based on microphysics it is suggested a mechanism for virons to soar, travel and land virons from alveoli to alveoli. This would explain the relatively weak effect of the non-pharmaceutical measures against the pandemia.