I am going to recant my prior statement, and I will explain why.
Consider
Bribery
Seeds or plays on table. Once each turn, your Smuggling or Greed personnel may discard one of your Gold-Pressed Latinum present to add [FER] to your mission there (except Ferenginar) until end of your next turn
OR to prevent one entire point loss of up to 9 points just incurred there (discard incident)
OR to release (and relocate to that personnel) one of your personnel held captive there.
Clearly the
ORs are meant to continue the prior required action which in this case can occur once each turn.
Consider
Lure of the Nexus
Prevent a personnel from leaving The Nexus. OR Relocate all personnel under The Nexus aboard a ship about to be destroyed by it; relocate ship to adjacent location. Discard interrupt.
In this case, the Prevent text precedes the
OR, but as was previously pointed out, both sides of the
OR are complete sentences and have sentence starting capitalization.
I now believe that
Smooth can be played once per death of a Youth personnel, as many times per turn as needed; limited only by how many copies you can manage to play in response.
Good call @DataNoh