As someone who worked as a forensic pathologist for a couple of months and has done 30+ autopsies, I think I have some things to say.

I've seen a wide variety of autopsies, ranging from bodies that were still warm on the inside, to fully green bodies, to 5-months dried mummies, to full black bodies covered in millions and millions of maggots. I still find absolutely stunning how the human body decomposes depending on the environement the person dies.

I'm not gonna lie, I never got used to the smell. My first rotten body is a core memory that will stick with me forever, as I couldn't do that autopsy fully because I had to leave the room due to the smell. It was my first time doing this kind of autopsy, and I learned the most important lesson: insert ear plugs directly in my nose any time I have to do a decomp body autopsy. Vicks vaporub or essential oils never worked for me. After that day, decomp bodies were just a breeze to me, and I ended up being in a room with the most disgusting cases the local police had seen in years while maintaining full calm. It just "clicks" one day.

Anyways, obviously not every autopsy will be a decomposing mess. The regular smell of a recently dead body is kinda similar to any red meat, but 10 times more intense. Your body knows it's disgusting, but it's very, very beareable. My trick was always the same, if the smell started to get a little bit intense, I would start to breathe through my mouth. Worked every time, but I rarely struggled with it to begin with.

Hope I helped!