Interesting. The furfural comes from cellulose degradation I assume. And the vanillin must come from lignin. The toluene and ethylbenzene are outgassing from ol

Interesting. The furfural comes from cellulose degradation I assume. And the vanillin must come from lignin. The toluene and ethylbenzene are outgassing from old adhesive? Benzaldehyde could come from air oxidation of the toluene. Not sure about the 2-ethyl-hexanol, but man I used to love the faint floral odor of mixed hexanes!