weird burnt smell in cabin 2012 Durango V8 Citadel

[Adil Rizwan]

Hi Fellows,

I face weird burnt smell like plastic/ rubber burning when on highway at cruise speed, this is felt only once like after 10-20km run when the ac is off. I think if ac is on then it also comes but not inside as the ducts are closed.

any idea what it can be?

Thx

[Krishna R]

Check engine belt pulleys