Being a beer can collector, I have transported full aluminum beer cans in my checked bags from all over without any problems except from MTY. When security searched my luggage before checking it in, they have tried to confiscate my beer. They said that the aircraft compartment wasn't pressurized and the cans would explode. They had the Mexicana ticket agent confirm this nonscense. I ended up taking the beer out and draining it in the bathroom rather than let the thirsty security agents have it.