Smell of coolant passenger side of motor

[Invasivore]

After I shut the truck off I smell a very faint smell of coolant coming from the passenger side of the truck. I can smell it faintly if I stick my head in the front passenger side wheel well. Can't find any coolant on the ground though

[mhatlen]

Make sure its not blowing out of cap,check the hoses to heater core as well as the heater control valve ( which is on top of valve cover and has a vacuum hose to it depending on model).
I would get out a 7 mm socket or straight screwdriver and snug up all your hose clamps.

[Invasivore]

Found it! lower radiator coolant hose clamp was loose. It was the only place I never checked (of course that is how it always works!).