[Cafarca]

This summer a strange slightly sweet chemical smell started coming through the air conditioner (both heat and cold, both recirc and fresh). A kind analytical chemist friend did some air sampling and found xylene, ethyl benzene, di and tri methyl benzene, and ethyl methyl benzene. I'm withholding my opinion about what this is. Question 1, has anyone experienced anything like this? Question 2, how do you get to the air intake both cabin and fresh? Does anyone have photos of these intakes? I have pulled off covers but cannot find anything that looks like an intake/hole. I know where they are supposed to be.