I would definitely not mind sneezing from their human looks
maybe try new ways to cause the sneezes, like a cat tail or a fly landing on a nose. Rarity trying to powder nerdy twilight face to give her a new look XD. The two Princess principals trying not to sneeze while sitting in their principle chair trying to maintain their power roles
Even when sunset had butterflies flying near her face in one of the YouTube short videos that would be awesome to have a sneeze reaction. There are a lot of ways that humans can sneeze that have not really been draw. For a long while if not ever drawn at all