Odd odor in '98 Legacy

[snow]

The past week or so, I got this strange odor in my 1998 Subaru Legacy. It is
a chemical like odor...almost smells like bondo. Seems to be coming from the
front. I can smell it from the outside also, and through the vents. Could
this be a small exhaust leak somewhere? Also, I have not had a chance to
check the car when it is completely dry as it has rain like crazy here in
Maine almost non-stop the past 10 days or so. Once it drys out, I plan to
check underneath. Anyways, it really isn't like a carbon dioxide odor, but
more like
a bondo smell....the stuff used to patch cars. That is what it reminds me
of. Any comments appreciated.

 

[Carl 1 Lucky Texan]

Sometimes the CV boots split and grease splatters onto the exhaust and
can stink. Ot you could've run over some plastic or something. You
didn't report a sweet, roasted marshmallow smell so likely it is not
coolant.

Carl