Indirect spread of infection at a physical location, which might be through the fomite or airborne route, has been studied on dynamic contact networks. We report a framework and some results that uses individual or agent-based simulations. We study this primarily in the context of agents traveling across locations, leaving “droplets” of infection when leaving a location. We abstract out technical details of diffusion dynamics to arrive at a simple tool that facilitates easy what-if analysis. © 2021, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.