You are probably smelling the varnish from the voice coil heating up. If you can smell it, you are driving your speakers way too hard. The voice coil will eventually open if you keep it up.
Can you smell your speakers when youre rockin out?
Lol, I know this a funny question, but whenever I'm listening at loud volumes, I can smell my speakers. It's always the same smell no matter what speakers I've had. It's not a burning smell, more like the insulation used in the boxes. Is it the air blowing through the insulation and then out the port, or cooked voicecoils? Like I said, it doesn't smell like burning electronics but I 'm not sure what it is. It kind of smells good; like new rubber in a bike shop or race gas smells to me. It's the association of good times :-)