You grab a fag and stuff it in your gob. Fire it up. Two inches or so soon disappears. The last inch lingers a bit until you get that slightly rubbery taste that indicates its over. You might continue anyway for a while - suck/savour (hot n nasty)/blow.
Been there. For 30 years. Five years ex-smoker but some damage done and not too sure how much.
Worrying about the effect of stubbing out on your own health is nonsense and ridiculous - who cares whether asbestos fibres are whole or dust after stuffing the bloody things in your gob? At that point you are endangering everyone in breathing range.
Anyone who finds breathing normally a bit of a challenge sometimes or always will soon disabuse you of one or two ideas.