THIS ANSWER IS ONLY A SUGGESTION :
I have seen and surprised for years about this strange phenomena without understanding the reason why some people smoking the same staff, same hit quantity are blowing a huge of smoke while other almost nothing coming out their lungs (and no matter what was smoked (weed, freebase, heroine, methamphetamine,… , and even cigarettes).
BUT I have notice since a few years that i am no more exhaling the same as when i was around 20-30 years old, holding as long possible the smoke in my lungs and exhaling nearly nothing out.
NOW I am 45 years old and suffering under emphysema (for info : Emphysema is begining with little holes in the lungs caused mostly from smoke and with the years passing, these holes are agglomerating together forming larger holes causing that the air breathed is getting more and more difficult to enter in the red blood cells which transport the oxygen)
SO now even if i keep the smoke a long time in my lungs, i am exhaling a huge amount of smoke, making me think the cause has a relationship with my lungs emphysema which are not absoring all the smoke inhaled, and coming out when i exhale it.
BUT IT’S ONLY A SUGGESTION, but would be interested to receive an explication from someone who have medical studie answer
