Smith says the team are pumped up for Aaron's milestone against the Rebels in Dunedin.
The Chiefs star said he would shave his hair off if over $50,000 was raised for Ka'iulani Forbes and her family.
The halfback will reach his century when his side take on the Rebels on Friday in Dunedin.
As Smith prepares for his 100th Super Rugby match, he reflects on a torrid end to 2016.
The Blues have secured their second win of the 2017 season against the Bulls, after a stunning second half display in Albany.