I think you misread this paper: "Gas-phase benzene was not found above blank levels in any of the JUULTM samples for any of the four flavors. " They detected

I think you misread this paper: "Gas-phase benzene was not found above blank levels in any of the JUULTM samples for any of the four flavors. " They detected benzene with two other tank-style vaporizers and seems benzene production is strongly correlated with wattage.