Abstract: Filtered, clean air can be provided via a personalized airflow to a user, to reduce inhalation of unwanted particles, bioaerosoles, and the like, while providing greater comfort than passive PPE. Various systems and methods are disclosed herein, for filtering and cleaning air via a smart, wearable device. For example, a headset in accordance with this disclosure can detect unwanted particulate matter, harmful compounds, bioaerosols, and other ambient conditions, and dynamically adjust an airflow to form an airshield that is distributed over a user's nose and mouth so as to reduce inhalation of contaminated air by as much as 70%. Various embodiments may utilize filters, disinfection modules, pressure sensors, movement sensors, ambient sensors, and contaminant sensors housed within wearable, portable devices.