City were dominating the first half and had the lead through a Raheem Sterling goal when Aguero inexplicably tried a Panenka when taking a penalty just before half-time that may well have put the tie beyond Thomas Tuchel's men.
City can be crowned Premier League champions this weekend if they beat Crystal Palace and Manchester United lose against Liverpool on Sunday.
Table-toppers City will be able to wrap up their third top-flight trophy in the last four seasons with a win against Chelsea, their opponents in the Champions League final later this month.
IAN LADYMAN: So Pep Guardiola will not need much of a team talk before the second leg of this tie in Manchester next Tuesday. The detail of what is required was all played out in Paris here.
Guardiola's side have had a memorable season and the City boss said the team did not let the chance to celebrate go to waste when they partied on Tuesday night at the City Football Academy.
The Manchester City manager found the right tactical balance to turn his faltering team into champions once again
The genius behind Manchester City’s success has lifted himself to new heights as his team again showed they are the best English football has to offer, writes Miguel Delaney
After a poor season in the 2019/20 campaign, Zinchenko did come close to a move away from the club but has fought his way back into Guardiola's plans.
The ex-Germany defender claims Pep Guardiola has become more 'cautious' as a manager since leaving Barcelona as the Spaniard stands on the brink of history with Manchester City.
JOE BERNSTEIN: It's largely forgotten, though not by Guardiola that his inaugural season in 2016-17 wasn't an unqualified success. After a heavy defeat at Leicester, he was dubbed 'Fraudiola'
Manchester United's 2-1 loss to Leicester City on Tuesday night saw Manchester City crowned the Premier League champions for the third time in four seasons.
SPECIAL REPORT: It is easy to forget now - given they will clinch this prize at such a canter - that Guardiola's future was uncertain right up until signing his two-year extension in November.