I have a kerosene furnace. Up until recently it has been running fine. Within the past 2 weeks I have been having a strong odor of kerosene coming from the vents when the blower comes on. The smell has been getting stronger and is so bad now it fills the whole house with it. I have turned my furnace off due to the smell being so bad. I have a neighbor that works for furnances for a living but he can not find the reason for the smell. Any suggestion on where the smell is coming from and why would be really appreciated. Thank you

Call a qualified HVAC service person. I would suspect a bad heat exchanger. Special tests or equipment may be necessary to confirm the heat X as being bad.