Peace be upon you and God's mercy and blessings.
Ayatollah Al-Sistani (may God protect him):
If a person transmits something that contradicts the fatwa of a jurist, it is obligatory (as a precaution) for them to inform those who heard it from them, if their transmission led to the listener not acting according to their religious duty; otherwise, there is no obligation to inform them.
Ayatollah Al-Khamenei (may God protect him):
If a person makes a mistake in transmitting a ruling and then realizes it, they must correct the error if possible. In any case, the listener is not permitted to act based on the transmission unless they are assured of its accuracy.
May you be successful in all good.