Identifying the primary contributors to indoor air pollution is paramount. Humans typically spend up to 90% of their time in indoor environments. In addition, homes are becoming increasingly air-tight to improve energy efficiency. The result is that indoor air pollution and poor/unregulated ventilation could be damaging human health. We have found that liquid aerosols from everyday cooktop activities can be in the respirable range and our work here is focused on identifying the underlying mechanisms at play in aerosol generation from cooking activities.