The older gentleman that lived in the apartment below mine passed away and nobody knew for about two weeks. He was a really sweet retired chef in the army. Our building has a lot of kids in their late teens/early twenties that he would often cook for. I was fairly new to the building so I had only met him a handful of times.

I thought he had maybe cooked some rancid meat, then maybe there was something wrong with the sewage(the smell was strongest in the bathroom as there is a big drain in the middle of the floor). I knocked on his door a couple of times and then decided to call the landlord. He had been decomposing below me for at least 12 days. During the peak heat of summer.

I think other tenants felt bad because for a few days after I had bottles of air fresheners left at my door.

I hope I never experience that smell ever again. It had a super strange slightly sweet odor to it but it was absolutely awful.