The members of "Happy Sunday - 1 Night 2 Days" went on a trip for a no smoking day, and made the audiences laugh.

On the most recent episode of the KBS 2 TV entertainment program "Happy Sunday - 1 Night 2 Days" which aired on March 9, 2014, the members, Cha Tae Hyun, Jung Joon Young, Kim Joo Hyuk, Defconn, and Kim Jong Min, went to Jeung Do, Shin Ahn, in Jun Nam for a trip commemorating the no smoking day. The "Happy Sunday - 1 Night 2 Days" producer Yoo Ho Jin told the members a week before going on a trip that they are not going to smoke for two days while they are on the trip. This was an important issue for the "Happy Sunday - 1 Night 2 Days" memberes, all of whom were cigarette smokers except Cha Tae Hyun. Producer Yoo Ho Jin said, "I hoped to bring a different perspective to smoking. It was very hard for the members to go cold turkey on cigarette smoking for the two days, and at times things got very serious. But I wanted to show the audience that quitting smoking is this hard, and wanted the "Happy Sunday - 1 Night 2 Days" memberes to have a chance to reconsider smoking."