From Chapter 2:
smoking was soon as common in the country as in London. On Wednesday, April 16, 1621, in the course of a debate in the House of Commons, Sir William Stroud, who seems to have been a worthy disciple of that tobacco-hater, King James I, moved that he "would have tobacco banished wholly out of the kingdom, and that it may not be brought in from any part, nor used amongst us"; and Sir Grey Palmes said "that if tobacco be not banished, it will overthrow 100,000 men in England, for now it is so common that he hath seen ploughmen take it as they are at plough." Perhaps this terrible picture of a ploughman smoking as he followed his lonely furrow did not impress the House so much as Sir Grey evidently thought it would; at all events, tobacco was not banished.

From Chapter Chapter 8:
Cowper then goes on to attack tobacco in lines which show how unpopular smoking at that date was with ladies, and which have since often been quoted by anti-tobacconists with grateful appreciation:

Pernicious weed! whose scent the fair annoys,
Unfriendly to society's chief joys,
Thy worst effect is banishing for hours
The sex whose presence civilizes ours;
Thou art indeed the drug a gardener wants,
To poison vermin that infest his plants,
But are we so to wit and beauty blind,
As to despise the glory of our kind,
And show the softest minds and fairest forms
As little mercy as the grubs and worms?

Notwithstanding this "satiric wipe," it is not likely that Cowper would have had much sympathy with John Wesley, who, in his detestation of what had been his father's solace at Epworth, forbade his preachers either to smoke or to take snuff.