How do you turn your nose off or deal with a heinous smell?

I'm going to visit my grandfather this weekend. His house smells like a skunk rolled around in some rotten cabbages, died, and got eaten and pooped out by a water buffalo. Thankfully I dont have to sleep there, but I do have to visit for a few hours, a couple days in a row. Last time, I wore a mask with mint toothpaste rubbed inside, which didn't help at all.

Google is failing me; the only results I can find are how to get rid of a smell, and that's just not possible here without a great deal of fire. So can anyone recommend how to live with a uniquely terrible smell for a few days?