Striker Smith, who joined the Millers from Bury last week, was used as a second-half substitute in the 1-1 draw at Oldham last weekend, but will look to force his way into manager Paul Warne’s plans for former club Pompey’s visit to the AESSEAL New York Stadium.
Warne named an unchanged team for the trip to SportsDirect.com Park, where Jon Taylor was an unused substitute after more than two months out with a knee injury, and he could figure for the first time since November 11.
Fellow midfielder Darren Potter continues his fight for fitness after an Achilles injury.
Portsmouth are set go into the game with the same squad that drew with Scunthorpe last Saturday.
Winger Gareth Evans is closing in on a comeback from a hamstring injury but the the trip to Yorkshire will come too soon.
Stuart O’Keefe has been ruled out for up to three months after hernia surgery and joins Milan Lalkovic (Achilles) and Danny Rose (leg) on the sidelines.
Cardiff remain unhappy with Derby's decision to postpone Sunday's Sky Bet Championship game at Pride Park.
Dundee United boss Csaba Laszlo has been left hoping for St Mirren to slip up in the race to seal promotion to the Ladbrokes Premiership.
Crewe will consider starting Chris Dagnall when they host Forest Green on Tuesday.