Can I get CS gas grenade props that omit harmless gas?
I think you mean "Emit." You don't want to leave out the harmless gas, do you?
emit
verb (used with object), emitted, emitting.
1. to send forth (liquid, light, heat, sound, particles, etc.); discharge.
2. to give forth or release (a sound):
He emitted one shrill cry and then was silent.
3. to utter or voice, as opinions.
4. to issue, as an order or a decree.
5. to issue formally for circulation, as paper money.
omit
verb (used with object), omitted, omitting.
1. to leave out; fail to include or mention:
to omit a name from a list.
2. to forbear or fail to do, make, use, send, etc.:
to omit a greeting.