Tiki torch lighter fluid and lamp oils are all generally chemicals that fall under a class of materials called hydrocarbons.
When ingested, if they make it into the stomach, hydrocarbons are generally not dangerous in small quantities. However, large quantities of these particular hydrocarbons can cause sedation and ingestion of hydrocarbons can become very dangerous very quickly if the liquid goes down the wrong pipe, and ends up in the lungs. Hydrocarbons in the lungs can cause a chemical pneumonia that can require hospitalization, and might have bad outcomes.
If you or anyone around you swallows Tiki Torch Fuel, Lighter Fluid, or Lamp Oil do not induce vomiting, do not stretch the stomach with food or drink, and call the Georgia Poison Center at 1-800-222-1222 immediately for further advice.