How should you inhale-exhale cigarette smoke?

I'll be honest I've never had a question like this before. Unfortunately… Cigarette smoke is inhaled just like breathing, as opposed to a cigar in which case the smoke is only held in the mouth and not inhaled, just for the flavor. While neither I recommend, a cigarette is far more harmful, as it does get right into the lungs. So to simply answer your question, you just suck it all into your lungs and exhale like a breath. Slowly killing you. :)