Question

Why do small babies laugh a lot when we sneeze ???

Answer 1

Answer:

agrees that communication is at the root of the reason babies laugh at fake sneezes. "Babies typically begin to laugh before they begin to talk, so laughing is one of their earliest forms of communicating with us," she tells Romper.

Answer 2

Answer:

Babies are far more likely to laugh when they fall over, rather than when someone else falls over.  If you tickle a baby they apparently laugh because you are tickling them, not just because they are being tickled.

Hope it helps u !!