emit (something) from (something)
To release something. The heater seems to be emitting some strange odors from its motor—I think we should evacuate the building.
emit (something) from (something) into (something)
To release something into something, such as a container or receptacle. I emitted the fluid from the syringe into the wound to clean it.
emit (something) into (something)
To release something into something else. I emitted the fluid into the wound to clean it.
emit
something (from something) (into something) to discharge something from something into something else. The snake emitted poison from its fangs into the cup the man held. It emitted venom into the cup from its fangs.