Figure 2
From: High concentrations of flavor chemicals are present in electronic cigarette refill fluids

Organoleptic Properties of Flavor Chemicals Identified. (a) The taste and odor descriptions of flavor chemicals were obtained from an online database and charted to show the number and percentages of flavor chemicals in each category. The pie chart shows the top 4 tastes as fruity, floral, spicy and minty/mentholic. Nine chemicals grouped as “N/A” did not have any identified taste/description. (b) Flavor chemicals present in concentrations >1 mg/ml were then sorted to identify major and frequently used flavor categories.