I was a two+ pack a day smoker who came down with a case of pneumonia and wound up in the hospital for five days on oxygen. My roommate was in his 90's and in a coma from a stroke. His breathing sounded like he had emphysema and every six hours or so I ring for the nurses so they'd come in and aspirate the fluid buildup from his lungs (he was drowning)!
He was still gurgling when I was released, I never smoked again.
Regards & best of luck,
GtG
I’m sure that would do it too!