BonkTastic
ಠ_ಠ
What was your personal experience with laced pot?
Back in the day? It was basically always something you had to consider in Ottawa, especially when the supply in circulation was low and people were "spicing" up the bad pot to mask the fact that it was stale/bad/crap. Lacing low-quality weed with a variety of "whatever" is pretty well known. There were a few farms out in the boonies (Greely area, I think?) back in the day that grew garbage-tier weed and used to spray their stuff with windex for a better high. Lots of pot circulating with PCP during those "droughts".
I mean... I'm not saying it was an epidemic or anything, like 50% of all pot was dangerous! But like... 5% during the drought periods? That seems reasonable as a number, and high enough in frequency that you would have been vigilant about who you were buying from - dealers you knew personally were more reliable.
In fact, that's another reason adult users probably don't encounter it as much - they have developed relationships and trust with certain sources for their pot. The chances of a "trusted" dealer selling you bad pot is way lower than normal. Your personal encounters, and therefore personal experiences, to encounter laced weed is almost nil based on the routines you have established. For a high-school kid with no relationships like that, who might be buying from the first person they can find who is selling, who are buying from total randos, the chances of getting bunk product is probably much higher.
My anecdotal experience is about 15 years old, as that was the last time I was a heavy smoker before quitting, but maybe things have improved? The data doesn't support that idea, though data for these sorts of things is notoriously bad due to the lack of self-reporting except in exceptional circumstances due to the self-incrimination nature of it.