I have a "truck dugout", so you can imagine fragrance is pretty important to me.
I've tried many different methods including:
- dryer sheets in the vents
- Lysol in the vent shroud behind the hood
- Many retail air fresheners, including the gel kind, liquid spray, and vent-mounted kind
- Hotboxing the truck with an Incense stick burning in it's burner on the floor-board while I left the truck in the parking lot
- Oust spray
- Febreeze spray
Most of those have worked considerably well, but only temporarily. The most potent smell I can find to get rid of my own "potent smell" is a bottle of Nautica Latitude Longitude cologne sprayed from about 12 inches away one time each morning. It leaves a faint trace smell of cologne in the truck all day until I leave work and start the process over again!