Wiktionary(0.00 / 0 votes)Rate this definition: 1  smudge(Noun) A blemish; a smear. 2  smudge(Noun) Dense smoke, such as that used for fumigation. 3  smudge(Verb) To obscure by blurring; to smear. 4  smudge(Verb) To soil or smear with dirt. 5  smudge.
This smell might mean that your coolant is leaking from somewhere like a radiator or heater hose. This kind of a problem means it's a good idea to take your car into a professional. If you smell maple syrup outside the car, this might mean that you have a leaking radiator cap or that the radiator itself has a leak.
Coolant is leaking Inspection Service & Cost. If you suspect your car may have a coolant leak, perhaps because the temperature gauge is reading higher than normal, it may not be hard to find out where itâs coming from. You may already be seeing fluid on the ground under the car or smelling coolant evaporating.