The foul aroma turned out to be a minor furnace repair
I am aware that any foul aromas in the apartment have to be eradicated right away. I am on it when it comes to vacuuming, mopping, scrubbing, and spraying Febreze in my household. I invested in a media air cleaner that installs right into my ductwork to affix any mold, mildew, and aromas wafting around.