Wildland fire smoke can impact public health and fire managers need to be aware of recent smoke science research findings to make informed decisions. In this fact sheet we seek to 'clear the air' by summarizing the progress of scientific research investigating the effects of wildland fire smoke on public health and actions individuals can take to minimize their exposure to smoke. We draw primarily from literature reviews by Liu et al. (2015) and Reid et al. (2016) on related research over the last 20 years.