Why the pot smell?

I'm nowhere near against people smoking weed or using cannabis AT ALL. I just don't understand the blatant walking around in public places (malls especially) REEKING of it. What is the reason? Because you can? Is there no awareness of it? Is it a rebellious slap in the face for all the years it was considered taboo and illegal?

It would just be nice to be able to go into a smaller store/walk a mall or shopping plaza without the customers AND employees overpowering the environment with the stench. Even cigarette smokers often try to hide the scent somehow.

But seriously - why?

ETA: Downvotes expected, but I don't walk around drenched in onion juice or heavy perfume just because I can.