I'm sure some "stoner" has done that, in which the cause of death was likely blunt trauma or bleeding.
Pot, in and of itself, has never caused a death. In combination with operating heavy machinary, its use can be fatal. Best to do one or the other, but not both simultaneously.
The anti-pot folks are beyond hypocrisy.
It was legal up until DuPont invented NYLON (NewYork/LONdon)and had the Pentagon cronies support to replace all the Navy's hemp and manila lines.
The Rockefeller controlled medical industry, (his ole man was a snake-OIL salesman and horse thief), had it's BETTER than pot cures too.
But the "moonshine" industry cum NASCAR, and the liquor businesses thrives and push THEIR drug at televised national sports events.
BTW - Washington was the nation's largest whiskey distiller at the time!!!
Another fundamental right in the crapper due to business elite's choke hold on politicians.
Pot has never even come close to the levels of physical and mental harm done by alcohol, or mis-used prescription drugs like xanax or oxy for that matter.
I don't recommend any of them - but what's corrupt is corrupt and what's fair is fair.