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 5:
Among the many medicinal virtues attributed to tobacco was its supposed value as a preservative from contagion at times of plague. Hearne, the antiquary, writing early in 1721, said that he had been told that in the Great Plague of London of 1665 none of those who kept tobacconists' shops suffered from it, and this belief no doubt enhanced the medical reputation of the weed. I have also seen it stated that during the cholera epidemics of 1831, 1849, and 1866 not one London tobacconist died from that disease; but good authority for the statement seems to be lacking. Hutton, in his "History of Derby," says that when that town was visited by the plague in 1665, that at the "Headless-cross ... the market-people, having their mouths primed with tobacco as a preservative, brought their provisions.... It was observed, that this cruel affliction never attempted the premises of a tobacconist, a tanner or a shoemaker." Whatever ground there may have been for the belief in the prophylactic effect of smoking, there can be no doubt that in the seventeenth century it was firmly held. Howell in one of his "Familiar Letters" dated January 1, 1646, says that the smoke of tobacco is "one of the wholesomest sents that is against all contagious airs, for it overmasters all other smells, as King James they say found true, when being once a hunting, a showr of rain drave him into a Pigsty for shelter, wher he caus'd a pipe full to Be taken of purpose." But here Mr. Howell is certainly drawing the long-bow. One cannot imagine the author of the "Counterblaste" countenancing the use of tobacco under any circumstances.