A mother and son were discovered mummified inside a Brooklyn apartment on Wednesday afternoon — after residents reported a troubling smell wafting through the building for days, according to sources and authorities.

The 80-year-old woman and 52-year-old man were discovered by officers who entered the building on the corner of Jay Street and Tillary Street in Downtown Brooklyn for a wellness check just before 1 p.m., according to the NYPD.

The unidentified pair were both found unresponsive, face-up, and their bodies appeared to have been mummified, according to sources.

EMS pronounced them dead on the scene, authorities said.

The two bodies were removed from the premises by 7:35 p.m. The Post observed.

“That’s actually nasty. I can smell it as soon as I walk out of the elevator. Almost

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