His clothes smelled like smoke after standing 'downwind of' the campfire.
Pollution from the factory affects those who live 'downwind from' it.
the 'downwind' side of a campfire
(..) Because I love them so much I cannot dishonor them. I thought you'd say that. No man controls my destiny. Especially not one who attacks downwind and stinks of garlic. Come! Our fighting days are done. By nightfall, we'll celebrate with my father. You understand, of course... (..)1991 Robin Hood: Prince of Thieves