Your mother in laws chili.
If you smell antifreeze, there must be a leak somewhere. Have the cooling system pressure tested.
Your fuel system might have a leak if the strong smell is similar to the smell of refuelling. Or the exhaust might have a leak allowing fumes to get in the cab with you. Diesel fuel has a strong oder if burnt in a rich mixture an in under hard acceleration.
I had the same issue about two weeks ago. Turns out the fuel return was the problem.
It makes your car smell somewhat new, but be careful as too much will make it smell like a cab, unless of course you want to go for the cab smell.
Coolant leak? Check your heater core.
The belt is burning up and wind is pushing the smell through the air conditioning.
a loose wire or a broken switch inside the cab
I kmow this sounds stupid most likely it is at least one cracked injector sleve. Stick your finger in the cooling system water when it is not hot bet it has diesel in it also it will smell of diesel.
I had this problem, the smell was coming from the sleeve over the shifter in a manual Toyota tacoma. My friend, a qualified mechanic, said it was probably a failed seal between the cab and belly of the vehicle that allowed oil burning off the exhaust from the engine, into the cab.
1. New gas cap. Plastic screw assembly to cap may be old/cracked. 2. Overfilling. There is a drain hole inside cab next to fuel filler tube. This can cause gas to stay inside housing until fumes evaporate. Need to check/repair. Fumes are EXPLOSIVE!
Any exhaust smell in a car cab indicates an exhaust leak somewhere along the line. Th reason you don't smell it while driving is because the air flowing air under the car is blowing the exhaust gasses away before it can rise into the cab. After the car sits for a while, the gasses seep out of the leak, and up into the cab.
Antifreeze is used to heat the cab of your vehicle. When you turn on your heat in your cab, it opens up a valve that allows the hot antifreeze to flow from the radiator into the heater core. If there is a leak in the rubber tubes that flow into the heater core, or if the heatercore is damaged, you will smell the antifreeze in the cab of the vehicle. You may need new hoses to the heater core and/or a new heater core.