The feat Splash Weapon Mastery gives alchemists the following effect:
When you hit with a splash weapon, select one additional square adjacent to the splash area; creatures in this area also take splash damage.
When an alchemist with the Healing Bomb discovery hits his target with a healing bomb, would that part of the feat work?
Since a healing bomb is supposedly a splash weapon, and this feat seems to affect the splash range of splash weapons, I would assume the healing bomb could also use this effect.
But the feat specifically notes that the creatures in the area take the splash damage, and the feat doesn't seem to have any information concerning the subject of healing bombs.
Is there any official statement made on this subject or will this just be up to the GM's interpretation?