Before revision:  Modeling is aided by an experimental molecular communication testbed based on fluorescent dyes and optical detection of aerosol and droplet clouds. A macroscopic molecular communication simulator is extended and used for estimating the transmission of infectious aerosols in different environments  .
After revision:  Modeling is aided by an experimental molecular communication testbed . In artificially induced coughs, a saturated aqueous solution containing a fluorescent dye mixed with saliva is released by an adult test person. The emitted particles are made visible by means of optical detection exploiting the fluorescent dye. The number of particles recorded is significantly higher in test series without mouth and nose protection than in those with a wellfitting medical mask. A simulation tool for macroscopic molecular communication simulator is extended and used for estimating the transmission of infectious aerosols in different environments .