Tren cough was the worst I have had, I was injecting 2.5ml of TrenE/Test E mixed together and I could feel the oil stinging as I was slowly pushing the plunger down and I could taste it in my mouth and I was fighting to complete the shot as fast as I could then I pulled the pin out quickly and fell back on my bed with the fan blowing on me, I was also covered in sweat and trying not to cough up a lung. Un-pleasant but it was over in 5-10mins or so.