公序良俗, こうじょりょうぞく
yojijukugo
public order and morals, social standards, public policy
これだけ禁煙、禁煙といわれる以上、喫煙というのは公序良俗に反する行為なんだろうね。
に
Particle
1. at (place, time), in, on, during
2. to (direction, state), toward, into
3. for (purpose)
4. because of (reason), with
5. by, from