YongeDundasSquare is a great public realm space but like many City infrastructure, the City doesn't adequately maintain it,... thus, "the bowels" of YongeDundasSquare - specifically the underground parking garage and elevator used to access Yonge subway northbound station usually reeks of urine.
And that's why these POPS (PrivatelyOwnedPublicSpace) are great,.. it's usually up to the developer/land-owner to maintain that public realm space,... like the POPS PublicSquare in front of HullmarkCentre or the Community Space (Non-Profit Childcare Facility and Family Service Centre) going in here at YongeSheppardCentre.