My sister-in-law cooked confit de canard long before me. She has an infamous story of placing the can of duck in a bain-marie so the duck fat would melt so she could take the pieces of duck out. Generally, it is necessary to melt the grease so one can get the pieces out. However, TAKE OFF THE LID! She forgot to pierce holes in the top of the can or even to remove the lid. I don't know if you have ever smelled duck grease. It is strong and can linger. Her can exploded when she tried to open it and the fat was all over the kitchen and even made it to the ceiling. I cannot imagine how she cleaned it all up and got rid of the smell. It sounds like a nightmare.
If you prepare confit de canard properly it is far from a nightmare. It is like a heavenly dream. One can find this online and get it shipped in the States. It is just 3-4 times the price it is here. I plan to eat my share of duck before we have to go back to California in Fall.