All-rounder Shakib Al Hasan already delivered the opening salvo in the build-up to the Test match, claiming the hosts have a better spin attack than the Australians for Bangladeshi conditions.
Matt Renshaw (6) and skipper Smith (3) were unbeaten at the close, with Australia seemingly requiring a partnership similar to the one that provided the bulk of Bangladesh's runs.
Dhaka: Nathan Lyon said Friday he was not carried away by the prospect of overtaking legendary Richie Benaud to become Australia's second most successful spinner during the forthcoming two-Test series against Bangladesh.
Despite the relatively slow track at Sher-e-Bangla National Stadium, which was also marking its own landmark of hosting 150 worldwide matches, Australians pacers were able to push the Bangladesh batsmen to the ropes through sheer pace.
"I have always said from my first game to this game, I am not about personal success", Lyon told reporters in Dhaka.
Upon winning the lbw verdict that pulled him into the 250-wicket zone, Nathan Lyon paused briefly on his haunches before arising as Australia's second most prolific spin bowler after Shane Warne. But since then the Agar, 23, has made only one further Test appearance, and has been hungry for a return to the long format of the game. We all make errors. No doubt we'll get around each other.
Mushfiqur Rahim appears likely to keep wickets, which would mean Liton Das misses out. But if that was the case before the day's play, it shouldn't have been after the milestone men worked together to haul their team out of a hole.
Australia's David Warner walks back to the pavilion.
Having won the toss and chosen to bat, Bangladesh soon found itself struggling at 3-10 after a devastating spell by Pat Cummins saw Soumya Sarka (8), Imrul Kayes (0) and Sabbir Rahman (0) all fall to catches behind the wicket.
"They've got some really good spinners and they've got some really good batsmen", Khawaja said. "I'll look back at my achievements at the end of my career". "I won't say in all conditions, but in our conditions we are better than them".
He eventually reached his 50 from 119 balls but by then he had put his stamp on the innings - playing his attacking brand of cricket as he hit three sixes charging down to Nathan Lyon.
From 10 for three on a hard pitch, that had enough early-morning moisture to encourage Australia's pace attack while offering turn at pace for the spinners, opener Tamim Iqbal and Shakib Al Hasan carried the team to 165 without further loss, and they did so in just 41.3 overs, both striking half-centuries in their 50th Tests.
"I think we can learn as a partnership from our first innings going forward", Lyon said.
"It's not ideal losing three wickets".