It would be ridiculously intrusive.
I hang out with friends who smoke the stuff, while I don’t. Not my cup of tea.
So a cop pulls me over and smells weed on me and suddenly they are searching my car?
Maybe they begin using computer sniffers and they are nkw searching my car?
Probably cause should be based on something physical that a LEO can prove that he saw, rather something that he “smelled” or because you had an expression on your face he happens to not care for(”he was acting suspicious”). Both are either HIGHLY subjective, or they can simply just make it up. Perhaps a middle ground can be found, and they should need to have another officer come and reach the same conclusion. Preferably a supervising officer.
PS:
****”Probably Cause” = Probable Cause (LOL)
(I believe some of them may use “Probably Cause” though)
“I hang out with friends who smoke the stuff, while I don’t.”
Second-hand smoke kills...or at least, might get you busted.