The following slogans are in harmony with the occasion where they are posted and the language is appropriate.

A. Guests feel at home, generally used in hotels, which means staying in a hotel is like being at home. It is not in harmony with the hospital;

B. "Cigarette factory workshop" is a workplace where work efficiency and safety must be emphasized. This slogan tells people what to do and what to pay attention to, and is consistent with the occasion. ;

C. At the entrance of the examination room, students are generally encouraged to achieve good results and express their blessings. "Failure is the mother of success" is inconsistent with the occasion;

D. The bathhouse is not a place for "visiting", so the word "visiting" is inappropriate.

Answer: B.