From Chapter 3:
It would seem, from one example I have noted, as if in some places smoking were not allowed in public-houses. In the account-book of St. Stephen's Church and Parish, Norwich, the income for the year 1628-29 included on one occasion 20s. received by way of fine from one Edmond Nockals for selling a pot of beer "wanting in measure, contrary to the law," and another sovereign from William Howlyns for a like offence. This is right and intelligible enough; but on another occasion in the same year each of these men, who presumably were ale-house keepers, had to pay 30s.—a substantial sum considering the then value of money—for the same offence and "for suffering parishioners to smoke in his house." I have been unable to obtain any information as to why a publican should have been fined an additional 10s. for the heinous offence of allowing a brother parishioner to smoke in his house.

From Chapter 8:
More than one writer of recent days has absurdly misrepresented Johnson as a smoker. The author of a book on tobacco published a few years ago wrote—"Dr. Johnson smoked like a furnace"—a grotesquely untrue statement—and "all his friends, Goldsmith, Reynolds, Garrick, were his companions in tobacco-worship." Reynolds, we know—

When they talk'd of their Raphaels, Corregios, and stuff,
He shifted his trumpet, and only took snuff.

Johnson and all his company took snuff, as every one in the fashionable world, and a great many others outside that charmed circle, did; but Johnson did not smoke, and I doubt whether any of the others did.