Airborne Viral Load Simulator

Viral pollution isn't only about contaminated water or surfaces — indoor air is a major transmission route, and it obeys real, well-tested physics. This simulator models a well-mixed room using the Wells–Riley equation: infectious occupants exhale virus-laden aerosol "quanta" into the air, ventilation and natural settling remove them, and a susceptible occupant accumulates an inhaled dose over time that maps directly onto an infection-risk probability. Adjust the number of infectors, their emission rate (quiet breathing versus loud talking), the room's ventilation rate (air changes per hour) and mask filtration efficiency, and watch the aerosol cloud in 3D grow and shrink in real time as the concentration and risk readouts update.