The bitter public feud between Gov. Andrew Cuomo and Mayor Bill de Blasio may have receded with the weekend agreement on a new MTA funding package, but the war between their aides continues unabated, insiders told The Post.

Staffers for Cuomo and de Blasio described what one called a “fatally poisoned atmosphere’’ between their camps, with much of the anger from the Cuomo side focusing on Karen Hinton, de Blasio’s press secretary and the wife of Howard Glaser, the governor’s now-estranged former operations director.

“They really hate Karen Hinton,’’ said a source with direct knowledge of the situation. “You can just feel it when you’re even around the governor’s people.”

Hinton, who worked at the federal Department of Housing and Urban Development when Cuomo headed it in the late ’90s, has taken several on-the-record and “background’’ shots at the governor amid the Cuomo-de Blasio feud since becoming press secretary in May.

That’s led several senior Cuomo aides to openly express contempt for Hinton, whom they describe as “selfish,’’ “disloyal’’ and “ungrateful’’ to the governor, despite his having helped her career for nearly 20 years.

Meanwhile, de Blasio’s camp has little regard for Cuomo’s top aides including communications director Melissa DeRosa, whom they regard as “meek’’ and “frightened’’ of the governor, according to sources.

The ill will was clearly on display last week at a party for the Global Strategy Group, a Democratic consulting firm, when “DeRosa and de Blasio’s people visibly steered clear of one another.

“It was noticeable and awkward,’’ an influential Democrat told The Post.

“Just as the Cuomo people think Hinton is shrill and over-the-top, the de Blasio people think DeRosa is out to get them and undermine them at every turn,’’ the source continued.

Senate Majority Leader John Flanagan (R-Suffolk) was being called by Democrats last week “Cuomo’s ventriloquist dummy” and “the governor’s hand puppet’’ because of statements echoing the governor’s demands that de Blasio increase the city’s share of MTA funding.

While Republicans, who hold a bare majority in the Senate, privately concede there’s merit to the claim, those close to Flanagan insist his “peace pact’’ with Cuomo, first arranged by former Majority Leader Dean Skelos (R-Nassau), has kept the governor from going all out to give the Senate over to Democratic control.

Flanagan’s allies also note that Cuomo, whose statewide polling numbers have reached a new low in recent weeks, remains widely popular on Long Island, even though Nassau and Suffolk counties have long been Republican strongholds.