Help! Burning smell in cabin
 

Hi Everyone,

I have a 2013 cx9 sport with around 48k miles on it. A few weeks ago i started smelling something weird/burning/sulfur in my cabin and doing some research, i read it could be something to do with tranmission/tranfer case/leaking etc. So i had a mechanic check it out completely and apparently those 3 look good but he said my breaks are almost worn off and the smell is coming from that! Has anyone experienced this or can guide me please?

Eager to get this fixed. Thanks in advance!