text: I’ve not noticed that before. All that’s in the wax is Rapeseed and Coconut oil and the fragrance shouldn’t create a fuel smell.
  
  Two possibilities.
  
  If it’s the later stages of each burn, it may just be the base notes, as top notes have evaporated.
  
  If it’s the later stage of the candle’s life, when everything gets hotter and it’s all molten, then perhaps the fragrance has all evaporated and the wax has an odour. The wax is just plant oil, so it will have some smell when heated and burned.
  
  Not sure?