Sensor network for validation of healthy buildings and transportation systems

A system for air flow optimization comprising:

• one or more injectors configured to expel aerosol particles into an environment;
• one or more sensor assemblies, each having a sensor processor and one or more sensors configured to detect aerosol particles in the environment, wherein the sensor processor converts detected aerosol particle data from the sensor to sensed concentration data;
• and
• a system processor that receives the sensed concentration data from the sensor processor, wherein the system processor operates the injectors in real-time to expel aerosol particles into an environment in response to the sensed concentration data and performs flow intensity map generation to map the aerosol particles.