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Probably the evaporator core has mould on it and needs to be cleaned.
You might have a fuel injector leak that causes the AC in your Dodge Intrepid to smell like gasoline. When the AC pulls air from the outside, it might be pulling some gas vapors in as well.
EGR Valve stuck open
It is caused by a fungus which grows on the heater core or the a/c evaporator. There are things that you can spray in the air intake but they don't last long.
why do my spark plugs smell like gas but the conductor is dry just the threads smell like gas and are also wet
The burning rubber smell in the tranmisson breaking apart inside.
If you smell antifreeze, there must be a leak somewhere. Have the cooling system pressure tested.
Is the fresh air recirculation working? Is this after using AC? AC cold coil needs to be sprayed with Lysol or alcohol to remove mold mildew and bacteria. Previous driver passed gas or gunked up the seat with BO
You need to check for a leak.
Engine rings probably worn
Nose plugs.
it is most likely the brake calipers sticking, as I recently had this problem on my 2007 dodge grand caravan. They did not do it all the time, but would stick out for a brief period of time after braking, thus causing the burning smell, and then shortly after retract far enough so that there was no longer cantact, and therefore, the burning smell then went away.