Yes 1.5 times. I've done hundreds of tren injects and once the cough was really bad. The .5 time I felt like I was going to cough.....................but then I didn't.
Aspirated both times, I'm not sure why it happened.
Quite often.
When I used it, I stripped naked in view of the profuse sweating and get a pillow ready to smother the coughing before injecting. I don't want the neighbors to call an ambulance when they hear me coughing to near death. Mmm, time for a new hobby