From Chapter 3:
The druggists and other tradesmen who sold tobacco in Elizabethan and Jacobean days had every provision for the convenience of their numerous customers. Some so-called druggists, it may be shrewdly suspected, did much more business in tobacco than they did in drugs. Dekker tells us of an apothecary and his wife who had no customers resorting to their shop "for any phisicall stuffe," but whose shop had many frequenters in the shape of gentlemen who "came to take their pipes of the divine smoake." That tobacco was often the most profitable part of a druggist's stock is also clear from the last sentence in Bishop Earle's character of "A Tobacco-Seller," one of the shortest in that remarkable collection of "Characters" which the Bishop issued in 1628 under the title of "Micro-Cosmographie."

From Chapter 5:
The belief in the prophylactic power of tobacco was, however, very generally held. When Mr. Samuel Pepys on June 7, 1665, for the first time saw several houses marked with the ominous red cross, and the words "Lord, have mercy upon us" chalked upon the doors, he felt so ill at ease that he was obliged to buy some roll tobacco to smell and chew. There is nothing to show that Pepys even smoked, which considering his proficiency in the arts of good-fellowship, is perhaps a little surprising. Defoe, in his fictitious but graphic "Journal of the Plague Year in London," says that the sexton of one of the London parishes, who personally handled a large number of the victims, never had the distemper at all, but lived about twenty years after it, and was sexton of the parish to the time of his death. This man, according to Defoe, "never used any preservative against the infection other than holding garlic and rue in his mouth, and smoking tobacco."