I got weed induced panic attacks all the time like 2 years ago, I'd been smoking daily for years but somehow, slowly I started to get more and more nervous and anxious when I'd smoke. Eventually, I'd get a panic attack every time I smoked, alone or with people. The worst occasion was when I was really high with a friend and I had a very psychedelic experience and my heart rate was probably 160bpm, thankfully, I had benzos and a friend to help me stay calm but I cut back drastically on how much I smoked for several months after that happened. I did still smoke but it was no where near as much or as often as usual. Eventually, I started using benzos and alcohol to help with the panic attacks then slowly started smoking more and more weed again, now I smoke flame weed daily again, I'll smoke BHO and hash, I don't even always need alcohol or benzos either :D