You can most definitely get Tren cough this is through nicking vein , capilariey whatever the case may be is how much Tren you actually got in your blood, sometimes it’s a light cough, itchy scalp , bodyheat rises and so on and sometimes you’ll literally feel like your dying. But from personal experience the more experience you have with Tren it tends to be no bad at all, you just learn to live with it lol