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No. Air will be in there because all containers are permeable, meaning that they will allow air to enter and escape.The higher the vacuum, the lower the evaporation or boiling point and temperature at which this occurs. Under vacuum, the resins and oils may vaporize at a much lower temperature than ambient air.
Vacuum may “suck” the odor from the plant, but then it’s a matter of time before it travels through the plastic.
Put it this way. Helium is second only to hydrogen in size. If you can make a container “helium proof," then you got a impermeable barrier relatively speaking as it’s impossible to achieve perfect vacuum for considerable time and not have
something come through. At the atomic level, things are like chain link fence. Lots of space between atoms even dense solids.
Of course, sniffer dogs aren’t detecting for a singular atomic element but a complex molecule.
