I only watched The Fog because I saw John Carpenter was attached to it. On the whole, while I appreciate older horror flicks, they just don't get me all the time. I feel like once the 90s hit, horror was able to take off a little better. Not to say there's not good older horror movies, because they 100% exist.
Take this one. While the sound effects kinda hurt my ears, I don't want to imply this movie was bad. It simple suffered the fallbacks of many older films, aggressive sound design being one of them.
Solid fully fleshed story though, which is somethign older horror always lends you.