Here is my personal take on tren cough. I am a biochemist and this is personal insight from extensive knowledge of the human body and extensive empirical knowledge from many many years of A.A.S. use. I believe it was labeled tren cough in the Finaplix era, when mass amounts of people started this and injecting every day. Daily usage from a huge sudden upswing in people doing this compound, labeled these coughing fits as "tren cough". This can actually happen with any inject able oil based solution. it seems, this is the result of piercing a vein, and having the injected oil seep into the pierced vein and enter your blood stream. A vein ends at your bronchi in your lungs to bond more oxygen to the blood, and is then carried to organs through arteries. If oil laden blood reaches your bronchi, it clogs it, giving you the feeling that you can't get air, and your body tries to expel whatever is keeping you from receiving more oxygen. The Omega 6 information is interesting. Oil can easily bond to Omega 6 and that would allow to travel farther in your blood stream to reach the bronchi. Once again, just my hypothesis from extensive knowledge and experience. To combat it, I have begun, and this is easier when more lean, to inject in a bright well lit area and actually inspect the skin for veins. Try to look hard and miss any veins that you see. This has worked on eliminating "tren" cough for me.