Your Questions: Do they influence the energy fields?
If they do influence the energy field could you tell me what is its influence?
Is there a different of influence between herbal candles or not herbals?
burning essences and candles do influence different layers within us.

Answers: First to consider is the fear of fire,being  burn - a pre born pattern that we all are born with due to such panishments and events that beenexperianced through the ages every where in this planet. The burning essences and candles that are not made merely for holly ceremony are in an unprotected zone and could awaken the burning circle pattern - myself I've had this pattern and the stories that I could tell...

Second to consider is its influence over the plants and minerals (gemstones) that you have at home - every one have  minerals at home, if not the house itself then part of the ordenary kitchen, every type of metal etc. In nature Fire is a dostructive power it's the only cause for permanent destruction - before people invented other means. Every burned cndle and essences create that trauma within plants and minerals and  its feedback may be projected over to you.

Third to consider is its influences over the senses. Burningessences and a like  candles do influence the smell snse directly to the brin, overwhelming it with the essence, if one need not that influence it could act like over doz.