They have been doing this since at least the 70s, when I saw it. There is nothing preventing anybody from doing it, you just want to be sure the food is wrapped in tin foil or some other heat proof metal container that keeps the bad air out.

If you want to stay up for a few nights, read The Hot Zone, which is about Ebola. Those bats are gonna kill us all someday, and there are so many of them!

If it flaps, you slaps. Amen.