Miasmatic Form

Transmutation [air, poison]
Level: Alchemist* 4, Artificer * 4, Sorcerer */Wizard * 4
Components: S, M (contact or inhaled poison worth 100 gp)
Casting Time: 1 Standard Action
Range: touch
Target: willing corporeal creature touched
Duration: 1 minute/level
Saving Throw: None, see text
Spell Resistance: no
  This spell functions like gaseous form, except the target's vaporous body is dangerous to creatures that touch it. A creature can make a Fortitude Save (DC 14 + your Intelligence modifier) on its turn to resist the vapors. When you cast this spell, you select one of the following options. Stinking cloud: The target's body nauseates creatures that fail their saving throws, as stinking cloud (Fortitude negates, see text). This form of the spell does not require a material component. Poisonous cloud: The target's body is deadly poison, dealing 1d2 points of Constitution damage to creatures that fail their saves (Fortitude halves). This form of the spell requires a material component.