Ask him/her - it might be a mistake.

Never heard of one, but Panasonic makes all sorts of air exhaust fans so maybe it's part of one of those kits.

Panasonic does make a passive inlet vent, so maybe your architect was thinking you need some make-up air when your dryer is being used. This makes some sense, but the panasonic product can only supply 18 cfm where as your dryer is consuming 100 to 150 cfm.

Here is a link that might be useful: Panasonic Passive Inlet Vent