Breathdraft.

Oh, hello! I'm glad you could make it. Won't you come inside my home?

Sure ... hey, you know what? On second thoughts I'll pass on coming inside, because your whole house smells of bad breath. I thought I could smell it from your driveway, but goddamn, that stench damn near suffocated me when you opened your door. It was like a backdraft of every scent gathered from every car crash and car wreck since time began. All combined. All at once in my face. See you later, enjoy your shitty home.