Couple of grammar points.
First of all: 我本想让您别抽烟. Most of this sentence is quite simple, but the addition of the character 本 can be puzzling, especially since 本 has many meanings. In this case, the word 本 means “originally”, as in “I originally thought to let you not smoke.” Or, in better English, “My original intention was that this would make you stop smoking.”
Another point: When the father learns that his cigarettes are gone, he 东翻西找. This phrase is actually a mixture of two words: 东西 (thing, stuff) and 翻找 (to rummage through things while searching, turn things over). We’ve seen this kind of thing before in previous posts, as with the phrase “仰起头来” in the post Little Dog Wears Shoes. If you let the mental picture kind of wash over you, you get an image of the father turning things over looking for his cigarettes.
A word of interest: 大烟枪. Literally, this word means “big opium pipe” or in more contemporary times can actually mean “big bong”. Colloquially in reference to a person, this means “someone who smokes a lot”, a “heavy smoker”.
Original is here.