Only the most common (and understandable) one that happens in modern films and TV set in the ealry to mid 20th Century.

It's 1930, or 1940, or even 1950, and people are doing what they do -but nobody is smoking! Back then, and at least until the 1970s, almost every adult smoked around 20 cigarettes a day. Especially when you're watching something like Foyles War or Saving Private Ryan, where attention has been paid to period detail, it jars, badly. I know most modern actors don't smoke, and it's only an old curmudgeon like me who'd notice, but for some reason, I always do!