The Air signs are traditionally connected with the sanguine humor or the blood.
Aquarius is symbolized as the Water Bearer, although it is actually one of the air signs.
Stay away from the Fire signs Aries, Leo and Sagittarius, as well as Air signs Libra, Gemini, and Aquarius; they''ll only serve to get on your nerves.
Similar then is the nature of the fire and air signs.
On the other hand, the Air signs may prove to be a bit too whimsical, if not downright baffling, for Scorpio.