The warmer a liquid is, the faster it evaporates and the faster something evaporates, the faster scent is going to be dispersed. Having said that, I have never had any better luck with a warm scent than a cold one. I used to use my ThermoCell with a pad on it. It never made any difference for me. Others may have had success though so use this for what it is intended...just a humble opinion.
I HEAR VOICES