Or that the phlegm is coming up steadily, but in small amounts, so you dont notice it
Source: Stanford University
The health consequences of involuntary exposure to tobacco smoke: a report of the Surgeon General
He places tobacco in the category of adiaphora , writing, Life and Time are more precious than to have a large Share of them laid out in scrupulous Enquiries, whether smoaking Tobacco, or wearing a Periwig be lawful or no. 47 Isaac Watts, Logick: or, The Right Use of Reason in the Enquiry after Truth, with w Variety of Rules to Guard Against Error, in the Affairs of Religion and Human Life, as well as in the Sciences (London: John Clark, Richard Hett, Emanuel Matthews, and Richard Ford, 1722), 405
However, the reason why weve all suddenly got very excited about harm reduction (essentially, reducing the amount you smoke) is that evidence shows that when people cut down, without necessarily wanting to stop, we find that more of them will have stopped a year on