3 ms·What do those “other contaminants” that aren’t tailpipe emissions have to do with smog?by mikestew 3y agoWhat do those “other contaminants” that aren’t tailpipe emissions have to do with smog?aqfamnzc 3y agoThey contribute to the smogboringg 3y agoMost of them don't - they are heavy particulates that fall to the ground.