Whoever said that was using the word “sacrament” in a much more expansive manner than one would normally use the word. Normally, it just refers to the seven sacraments of Baptism, Confirmation, Eucharist, Penance, Annointing, Marriage, and Holy Orders.
One could use the word in a looser manner; to say that every person is a sacrament might simply mean that every person could be a means of grace for others. That might be by way of giving good example to others. But, that’s not ex opere operato. It’s not instituted by Christ, and it doesn’t give grace every single time.
If a person is using the word in a non-standard way, they ought to clarify what they mean.