It's called taint.
When you kill a sexually developed male pig they often release musk and sweat. So it smells like going into a room where a couple just did it.
I used to raise Blue Butts (variety of pig) and have the butcher come once a year after auction to cut them up. The Musk smell isn't that bad unless done in an enclosed area.
100% this.
I know for a fact that in 1999 (25 years ago) when I was running an ISP that Seagate Barracuda 4GB SCSI-2 Ultra Wide drives for example were costing $300/drive rounded; I used to buy hundreds of them. I have an old purchase order framed showing such and those were very much a premium drive back then.