It doesn't. I believe the OP may be thinking about the better
throat hit that comes with higher voltage
devices and thinking the the better TH comes only from the nicotine. There have been reports that when a person moves up to 5 volt or VV PV's, they are able to lower their nic strength because you don't need as much nic to still get a good throat hit due to the warmer vapor produced from higher volt
batteries. 95% of throat hit come from higher nic strength and higher voltage (5 volt/VV).