It depends on what kind of meat is being fed too. For example, I can't feed Tomas many of the Nutro cans because it seems like all but one or two flavors have beef in them - for some reason beef makes him gasy.
Meat byproducts instead of a listed particular meat, like chicken, could potentially do that too.
I've noticed certain brands seem to be more likely to cause odor... In some cases it could also be the food is too rich.
One of the kittens in the house is eating Orijen (grain-free) and I haven't noticed any great litterbox odor. When I had my foster feral I was giving him Instinct and his litterbox was odor-free! However when we tried EVO there was a strong odor. My sister's cat is on EVO and she stinks up the whole apartment when she uses the litterbox! :P