I'm not sure what you mean by the second half of your post, are you trying to turn fingernails into vomit for some reason?
I assume the material emission that you want to give the animal men is the projectile vomit? If so, copy this into their creature variations.
[CV_NEW_TAG:USE_MATERIAL_TEMPLATE:KORGVOMIT:CREATURE_EXTRACT_TEMPLATE]
[CV_NEW_TAG:DISPLAY_COLOR:2:0:1]
[CV_NEW_TAG:STATE_COLOR:ALL_SOLID:DARK_GREEN]
[CV_NEW_TAG:STATE_COLOR:LIQUID:DARK_GREEN]
[CV_NEW_TAG:STATE_COLOR:GAS:DARK_GREEN]
[CV_NEW_TAG:STATE_NAME:ALL_SOLID:frozen vomit]
[CV_NEW_TAG:STATE_ADJ:ALL_SOLID:frozen vomit]
[CV_NEW_TAG:STATE_NAME:LIQUID:vomit]
[CV_NEW_TAG:STATE_ADJ:LIQUID:vomit
[CV_NEW_TAG:STATE_NAME:GAS:boiling vomit]
[CV_NEW_TAG:STATE_ADJ:GAS:boiling vomit]
[CV_NEW_TAG:PREFIX:NONE]
[CV_NEW_TAG:CAN_DO_INTERACTION:MATERIAL_EMISSION]
[CV_NEW_TAG:CDI:ADV_NAME:Projectile vomit]
[CV_NEW_TAG:CDI:USAGE_HINT:NEGATIVE_SOCIAL_RESPONSE]
[CV_NEW_TAG:CDI:USAGE_HINT:TORMENT]
[CV_NEW_TAG:CDI:BP_REQUIRED:BY_CATEGORY:MOUTH]
[CV_NEW_TAG:CDI:MATERIAL:LOCAL_CREATURE_MAT:KORGVOMIT:LIQUID_GLOB]
[CV_NEW_TAG:CDI:VERB:vomit:vomits:NA]
[CV_NEW_TAG:CDI:TARGET:C:LINE_OF_SIGHT]
[CV_NEW_TAG:CDI:TARGET_RANGE:C:15]
[CV_NEW_TAG:CDI:MAX_TARGET_NUMBER:C:1]
[CV_NEW_TAG:CDI:WAIT_PERIOD:50]
Were you still interested in having a way to become nauseous at will, or is projectile vomiting enough?
*Also, Roses reminded me that it's possible to emit splatters instead of liquid globs. Would you prefer that? It gives you more control over where you vomit, and also allows for you to pick up the vomit off the ground and use it as a (weak) weapon. It does have the downside of preventing you from directly hitting anyone with the initial attack, however. If you try, you just vomit on the floor underneath them. In any case, I tweaked the material to fix an oversight from before. Here's the new version.
[USE_MATERIAL_TEMPLATE:KORGVOMIT:CREATURE_EXTRACT_TEMPLATE]
[DISPLAY_COLOR:2:0:1]
[STATE_COLOR:ALL_SOLID:DARK_GREEN]
[STATE_COLOR:LIQUID:DARK_GREEN]
[STATE_COLOR:GAS:DARK_GREEN]
[STATE_NAME:ALL_SOLID:frozen vomit]
[STATE_ADJ:ALL_SOLID:frozen vomit]
[STATE_NAME:LIQUID:vomit]
[STATE_ADJ:LIQUID:vomit
[STATE_NAME:GAS:boiling vomit]
[STATE_ADJ:GAS:boiling vomit]
[PREFIX:NONE]