I decided that I will be soldering airwire to one of the pins of existing SMD devices directly (e.g. to capacitor terminal) - there's no space for through-hole wire mounting pad, and soldering to terminal soldered to pad should be more mechanically reliable than soldering wire just to its dedicated SMD pad.
If I give same name to signal at each side of airwire I will have airwire in the board editor, and I want to eliminate it. If I give signals different names, while "output" side of airwire passes ERC properly, another side is having input only, and gives an error. I of course can accept this error, but looking to the way making it "clean".
I tried to make SMD pad terminals for each side of airwire, but putting it onto the resistor/capacitor pad logically gives "overlap" error. Is there any other hacking way I can tell EAGLE that it should not draw airwire?