Maybe avoid exhaling stronger blends through your nose -also know as retrohaling a phrase I can’t stand personally, to me a retrohale is the greeting “what’s new daddyo” but that’s beside the point- as the nasal cavity absorbs more nicotine and you’re pushing the smoke past the more tender back of your throat.I haven't had a problem with bold cigars before (smoked cigars a lot before picking up pipes), but maybe since this was my first taste of a bold pipe tobacco you're correct. When I felt the smoke hit the back of my throat that's when I started coughing, but now thinking about how to actually tell if I'm inhaling in my lungs or not?