There is no fire without smoke.
There is no smoke without fire.
There is no smoke without fire.
There is no smoke without fire.
《諺》 火のないところに煙は立たない.
Where there's smoke there's fire.=There's no smoke without fire.
There is no smoke without fire.
There is no smoke without fire.
No smoking (within these walls).
Smoking is forbidden in this building.
I'd like a seat in the nonsmoking section.