there is always exhaust (expect when the engine's off or hybird)
unless you are too close to the car in front of you.
Could be overheated coolant or just leaked oil burning off your exhaust headers
It all depends if the car is running lean or rich, if its burning oil, if its burning coolant. a clean running car doesn't really have a strong smell. By the way, exhaust fumes are toxic. It contains carbon monoxide and it is highly toxic. So don't go around smelling car smoke.
A device called the heat riser has stuck or the heat riser hose has fallen off. could this loose part cause a metal raddling when you start to excelerate?
Yes. A car can run without an exhaust manifold. It will burn out the exhaust valves in the cylinders a lot faster than normal, but it can be done.
A fuel leak. A coolant leak, coolant has a sweet smell. An exhaust leak. A burnt clutch. A burnt rubber smell, from a slipping accessory belt/tensioner or rubber contacting the exhaust. A Moldy smell with the A/C on from a dirty/moldy evaporator. An oil leak, if it is leaking near the exhaust manifold, from say the valve cover. A smell from burnt brakes from a faulty brake caliper. A burnt plastic smell, from plastic melting against the exhaust( wiring loom, or plastic bag on catalytic converter). A. mildew smell caused by a water leak, clogged evap case drain, flogged sunroof drain.
don't ever smell your car's exhaust.
No. have exhaust checked/repaired
exhaust is pretty easy to smell. If you smell it, then you likely do, also check the rear end of the car for possible places where the exhaust can get into. a battery powered carbon monoxide detector will also work
exhaust leak or fuel leak
Find and fix exhaust leak
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.
Car exhaust can smell like rotten eggs when the fuel has a lot of sulphur in it.
Your car doesn't smell like carbon monoxide because carbon monoxide is invisible and odorless. I can't suggest what caused that smell because I have no way of knowing what it smells like. An exhaust leak will cause your car to smell like exhaust ( and has carbon monoxide in it) and is hazardous to you and your passengers.
Typically gas/exhaust, old car smell, history/character. All you need to know.
yes nd it will also give of a oily smell with it
Most likely your exhaust is rattling and the smell is because your catalytic converter is bad