tobacco parasites Chemical Defenses Protect From — Biological Strategy — AskNature Tobacco hornworm parasitized by wasp
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doi: 10.1038/nrendo.2016.32
The tin aroma is certainly indicative of it's relationship but is a more coherent vanilla instead of the rather schizoid vanilla-fruit-whatever of that blend

It should only be used for a certain amount of time in a room that is empty
On the other hand, research indicates that US counterparts are more likely to smoke it on its own.
