There is some property of peppermint also that might be at work here.
I recall a study where bored, tired computer programmers were to just sniff peppermint, and they found increased energy and productivity resulted.
http://www.washingtonpost.com/wp-dyn...031901624.html
I suppose this is not too far from the aromatic effects of catnip on cats. Only the peppermint for humans is less euphoric. Both plants are members of the "mint" family though.
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Weezie looking at petunias 8.25.2017
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