Engine-y smell/ oily smell is suddenly in the house, what is it?

Question

My family and i just came back from a dinner at our friends' house. As soon as we entered our house there was this overwhelming smell of like a burned engine.

I thought it was the stove but it's off. My mom checked the laundry room but it's not that either...

What is it??

Answer 1

Could be the belt on the furnace.

Answer 2

I would check all of your outlets and fuses or breakers, which ever you have. I had an outlet to burn one time and it smells kind of like that. I hope this helps.