They say that the marijuana available today is much more potent than back in the sixties. That may be true in more ways than one.
I read that drug smugglers were packing marijuana in with jalapeño peppers. I expect that the hot chili peppers would throw the drug sniffing dogs off the scent, but you have to wonder how badly it would injure those smoking it.
How would you explain to the emergency room doctor the chemical burns to your fingers and respiratory system?
On the other hand, it might be convenient if you didn’t need to find a lighter or matches if it could self ignite.