Car is 1992 300TE

Oder occurred suddenly. Hard to describe, wife said she thought something was burning. It made her eyes water.

A/C and heat work fine.

Not sure what it is or what is causing it. Do not think it's coolant or R134a, but what else could it be?

I have a similar issue. Mine smells like something died in there. Did you get you problem resolved.

Check to see if your AC condensate drain is clogged.
If it is you'll get a musty, moldy, critter dying smell......

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http://i19.photobucket.com/albums/b1...c/GOWIDE-1.jpg
1971 280SL ROADSTER
1988 300CE TWIN TURBO WIDEBODY
1994 E320 CABRIOLET
1999 C43 AMG
2005 G55K AMG
2008 CLK63 AMG BLACK SERIES

Does it smell like plastic burning?

It could be the Wiper motor. Mine failed and blew acrid smoke into the cabin while on I-35. (1995 E20 Wagon)