IDK what dispensaries you're visiting. But, even through the manufacturer's packaging and the dispensary's packaging it was quite loud in my car driving home.
Not true of the dispensary I visited a few months ago while in a legal state. You could smell cannabis in the parking lot from the building and smell it once I got it back to the car where the smell lingered for hours even after double bagging it.
I can't speak of dispensaries in other states. I've been to several in Illinois and that is how they all do it. There is a heavy cannabis smell when they actually let you inside the place where you buy it and maybe if a cop was hanging right outside the driveway into the dispensary specifically to catch people leaving, they might smell it on you, but considering they hire off-duty cops to be security, I doubt it.
So funny as every dispo has a smell. Of weed. If the jars and containers are smell proof where's it coming from.?.
No way every container is perfectly sealing. And if even 1 I buy leaks slightly it will smell like weed in my car even if I don't open the container. So is it really fair to use smell as the 1 factor needed to allowing search.