Weirdly Funny incident happening in My Office

So it started happening a week ago. A strange smell started coming from my workstation. I complained about it to our HR and then they checked the whole space and found some dead rats and they were removed.

Now after that day we are going everyday but a strange pungent smell more like a DEAD animal (probably rat) is flowing in the air.

The funny part is the smell does not come in the morning when we arrive. It increases till afternoon..stays constant till evening and goes away.

Since thay day till today our office called Carpenter, Pest Control, AC Mechanic but the source of the smell is unkown. No corner is left unnoticed even the false ceiling is remove shafts are checked nothing. And strangely the smell goes away when Carpenters/Pest control comes. (Probably a coincidence).

ANY IDEA GUYS WHATS HAPPENING?